Hello, I have install the calendarserver dependence throw pip with this command, pip install -r requirements-stable.txt but when I start the calendarserver, I have a log similar to Starting server... Reading configuration from file: /Applications/MAMP/htdocs/CalendarServer-7.0/conf/caldavd-dev.plist 2016-05-12 21:40:08+0200 [-] Log opened. 2016-05-12 21:40:08+0200 [-] [twisted.application.app#info] twistd 15.2.1 (/System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python 2.7.10) starting up. 2016-05-12 21:40:08+0200 [-] [twisted.application.app#info] reactor class: twisted.internet.selectreactor.SelectReactor. 2016-05-12 21:40:08+0200 [-] [twisted.internet.tcp#info] AMPPushNotifierFactory starting on 62311 2016-05-12 21:40:08+0200 [-] ControlSocket starting on './data/Logs/state/caldavd.sock' 2016-05-12 21:40:08+0200 [-] [txdav.base.datastore.subpostgres#info] Creating /tmp/ccs_postgres_b58a648cbe50bc0e4ac7cd29028ed59e 2016-05-12 21:40:08+0200 [-] [txdav.base.datastore.subpostgres#info] Cluster already exists at /Applications/MAMP/htdocs/CalendarServer-7.0/data/Data/Database/cluster 2016-05-12 21:40:08+0200 [-] [txdav.base.datastore.subpostgres#info] Requesting postgres start via: ['/usr/local/bin/pg_ctl', 'start', '--log=/Applications/MAMP/htdocs/CalendarServer-7.0/data/Logs/postgres.log', '--timeout=86400', '-w', '-o', "-c listen_addresses='' -c unix_socket_directories=/tmp/ccs_postgres_b58a648cbe50bc0e4ac7cd29028ed59e -c shared_buffers=139 -c max_connections=93 -c standard_conforming_strings=on -c unix_socket_permissions=0770 -c log_line_prefix=%t"] 2016-05-12 21:40:08+0200 [-] [memcached-Default] Upon execvpe memcached ['memcached', '-U', '0', '-s', './data/Logs/state/memcache.sock'] in environment id 4647634656 2016-05-12 21:40:08+0200 [-] [memcached-Default] :Traceback (most recent call last): 2016-05-12 21:40:08+0200 [-] [memcached-Default] File "/Library/Python/2.7/site-packages/twisted/internet/process.py", line 424, in _fork 2016-05-12 21:40:08+0200 [-] [memcached-Default] environment) 2016-05-12 21:40:08+0200 [-] [memcached-Default] File "/Library/Python/2.7/site-packages/twisted/internet/process.py", line 502, in _execChild 2016-05-12 21:40:08+0200 [-] [memcached-Default] os.execvpe(executable, args, environment) 2016-05-12 21:40:08+0200 [-] [memcached-Default] File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 355, in execvpe 2016-05-12 21:40:08+0200 [-] [memcached-Default] _execvpe(file, args, env) 2016-05-12 21:40:08+0200 [-] [memcached-Default] File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 382, in _execvpe 2016-05-12 21:40:08+0200 [-] [memcached-Default] func(fullname, *argrest) 2016-05-12 21:40:08+0200 [-] [memcached-Default] OSError: [Errno 2] No such file or directory 2016-05-12 21:40:08+0200 [-] [txdav.base.datastore.subpostgres.PostgresMonitor#info] waiting for server to start.... 2016-05-12 21:40:09+0200 [-] [memcached-Default] Upon execvpe memcached ['memcached', '-U', '0', '-s', './data/Logs/state/memcache.sock'] in environment id 4647571816 2016-05-12 21:40:09+0200 [-] [memcached-Default] :Traceback (most recent call last): 2016-05-12 21:40:09+0200 [-] [memcached-Default] File "/Library/Python/2.7/site-packages/twisted/internet/process.py", line 424, in _fork 2016-05-12 21:40:09+0200 [-] [memcached-Default] environment) 2016-05-12 21:40:09+0200 [-] [memcached-Default] File "/Library/Python/2.7/site-packages/twisted/internet/process.py", line 502, in _execChild 2016-05-12 21:40:09+0200 [-] [memcached-Default] os.execvpe(executable, args, environment) 2016-05-12 21:40:09+0200 [-] [memcached-Default] File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 355, in execvpe 2016-05-12 21:40:09+0200 [-] [memcached-Default] _execvpe(file, args, env) 2016-05-12 21:40:09+0200 [-] [memcached-Default] File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 382, in _execvpe 2016-05-12 21:40:09+0200 [-] [memcached-Default] func(fullname, *argrest) 2016-05-12 21:40:09+0200 [-] [memcached-Default] OSError: [Errno 2] No such file or directory 2016-05-12 21:40:09+0200 [-] [txdav.base.datastore.subpostgres.PostgresMonitor#info] done 2016-05-12 21:40:09+0200 [-] [txdav.base.datastore.subpostgres.PostgresMonitor#info] server started 2016-05-12 21:40:09+0200 [-] [txdav.base.datastore.subpostgres.PostgresMonitor#info] pg_ctl process ended with status=0 2016-05-12 21:40:09+0200 [-] [txdav.base.datastore.subpostgres#info] /usr/local/bin/pg_ctl exited 2016-05-12 21:40:09+0200 [-] [txdav.who.util#info] Configuring augment service of type: <class 'twistedcaldav.directory.augment.AugmentXMLDB'> 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseSchemaStep#warn] Beginning database schema check. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseSchemaStep#warn] Required database key VERSION: 58. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseSchemaStep#warn] Actual database key VERSION: 58. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseSchemaStep#warn] Schema version check complete: no upgrade needed. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseSchemaStep#warn] Database schema check complete. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseAddressBookDataStep#warn] Beginning database addressbook data check. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseAddressBookDataStep#warn] Required database key ADDRESSBOOK-DATAVERSION: 2. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseAddressBookDataStep#warn] Actual database key ADDRESSBOOK-DATAVERSION: 2. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseAddressBookDataStep#warn] Addressbook data version check complete: no upgrade needed. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseAddressBookDataStep#warn] Database addressbook data check complete. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseCalendarDataStep#warn] Beginning database calendar data check. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseCalendarDataStep#warn] Required database key CALENDAR-DATAVERSION: 6. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseCalendarDataStep#warn] Actual database key CALENDAR-DATAVERSION: 6. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseCalendarDataStep#warn] Calendar data version check complete: no upgrade needed. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseCalendarDataStep#warn] Database calendar data check complete. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseNotificationDataStep#warn] Beginning database notification data check. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseNotificationDataStep#warn] Required database key NOTIFICATION-DATAVERSION: 1. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseNotificationDataStep#warn] Actual database key NOTIFICATION-DATAVERSION: 1. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseNotificationDataStep#warn] Notification data version check complete: no upgrade needed. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseNotificationDataStep#warn] Database notification data check complete. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseOtherStep#warn] Beginning database other upgrades check. 2016-05-12 21:40:09+0200 [-] [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseOtherStep#warn] Database other upgrades check complete. 2016-05-12 21:40:09+0200 [-] [twistedcaldav.upgrade#warn] Loading delegate assignments from XML 2016-05-12 21:40:09+0200 [-] [twistedcaldav.memcachepool.MemCacheClientFactory#error] MemCache connection failed: [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectError'>: An error occurred while connecting: 2: No such file or directory. ] 2016-05-12 21:40:11+0200 [-] [memcached-Default] Upon execvpe memcached ['memcached', '-U', '0', '-s', './data/Logs/state/memcache.sock'] in environment id 4651329528 2016-05-12 21:40:11+0200 [-] [memcached-Default] :Traceback (most recent call last): 2016-05-12 21:40:11+0200 [-] [memcached-Default] File "/Library/Python/2.7/site-packages/twisted/internet/process.py", line 424, in _fork 2016-05-12 21:40:11+0200 [-] [memcached-Default] environment) 2016-05-12 21:40:11+0200 [-] [memcached-Default] File "/Library/Python/2.7/site-packages/twisted/internet/process.py", line 502, in _execChild 2016-05-12 21:40:11+0200 [-] [memcached-Default] os.execvpe(executable, args, environment) 2016-05-12 21:40:11+0200 [-] [memcached-Default] File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 355, in execvpe 2016-05-12 21:40:11+0200 [-] [memcached-Default] _execvpe(file, args, env) 2016-05-12 21:40:11+0200 [-] [memcached-Default] File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 382, in _execvpe 2016-05-12 21:40:11+0200 [-] [memcached-Default] func(fullname, *argrest) 2016-05-12 21:40:11+0200 [-] [memcached-Default] OSError: [Errno 2] No such file or directory 2016-05-12 21:40:12+0200 [-] [twistedcaldav.memcachepool.MemCacheClientFactory#error] MemCache connection failed: [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectError'>: An error occurred while connecting: 2: No such file or directory. ] 2016-05-12 21:40:15+0200 [-] [memcached-Default] Upon execvpe memcached ['memcached', '-U', '0', '-s', './data/Logs/state/memcache.sock'] in environment id 4651329528 2016-05-12 21:40:15+0200 [-] [memcached-Default] :Traceback (most recent call last): 2016-05-12 21:40:15+0200 [-] [memcached-Default] File "/Library/Python/2.7/site-packages/twisted/internet/process.py", line 424, in _fork 2016-05-12 21:40:15+0200 [-] [memcached-Default] environment) 2016-05-12 21:40:15+0200 [-] [memcached-Default] File "/Library/Python/2.7/site-packages/twisted/internet/process.py", line 502, in _execChild 2016-05-12 21:40:15+0200 [-] [memcached-Default] os.execvpe(executable, args, environment) 2016-05-12 21:40:15+0200 [-] [memcached-Default] File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 355, in execvpe 2016-05-12 21:40:15+0200 [-] [memcached-Default] _execvpe(file, args, env) 2016-05-12 21:40:15+0200 [-] [memcached-Default] File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 382, in _execvpe 2016-05-12 21:40:15+0200 [-] [memcached-Default] func(fullname, *argrest) 2016-05-12 21:40:15+0200 [-] [memcached-Default] OSError: [Errno 2] No such file or directory 2016-05-12 21:40:21+0200 [-] [twistedcaldav.memcachepool.MemCacheClientFactory#error] MemCache connection failed: [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectError'>: An error occurred while connecting: 2: No such file or directory. ] 2016-05-12 21:40:23+0200 [-] [memcached-Default] Upon execvpe memcached ['memcached', '-U', '0', '-s', './data/Logs/state/memcache.sock'] in environment id 4651329528 2016-05-12 21:40:23+0200 [-] [memcached-Default] :Traceback (most recent call last): 2016-05-12 21:40:23+0200 [-] [memcached-Default] File "/Library/Python/2.7/site-packages/twisted/internet/process.py", line 424, in _fork 2016-05-12 21:40:23+0200 [-] [memcached-Default] environment) 2016-05-12 21:40:23+0200 [-] [memcached-Default] File "/Library/Python/2.7/site-packages/twisted/internet/process.py", line 502, in _execChild 2016-05-12 21:40:23+0200 [-] [memcached-Default] os.execvpe(executable, args, environment) 2016-05-12 21:40:23+0200 [-] [memcached-Default] File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 355, in execvpe 2016-05-12 21:40:23+0200 [-] [memcached-Default] _execvpe(file, args, env) 2016-05-12 21:40:23+0200 [-] [memcached-Default] File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 382, in _execvpe 2016-05-12 21:40:23+0200 [-] [memcached-Default] func(fullname, *argrest) 2016-05-12 21:40:23+0200 [-] [memcached-Default] OSError: [Errno 2] No such file or directory 2016-05-12 21:40:39+0200 [-] [memcached-Default] Upon execvpe memcached ['memcached', '-U', '0', '-s', './data/Logs/state/memcache.sock'] in environment id 4651330368 2016-05-12 21:40:39+0200 [-] [memcached-Default] :Traceback (most recent call last): 2016-05-12 21:40:39+0200 [-] [memcached-Default] File "/Library/Python/2.7/site-packages/twisted/internet/process.py", line 424, in _fork 2016-05-12 21:40:39+0200 [-] [memcached-Default] environment) 2016-05-12 21:40:39+0200 [-] [memcached-Default] File "/Library/Python/2.7/site-packages/twisted/internet/process.py", line 502, in _execChild 2016-05-12 21:40:39+0200 [-] [memcached-Default] os.execvpe(executable, args, environment) 2016-05-12 21:40:39+0200 [-] [memcached-Default] File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 355, in execvpe 2016-05-12 21:40:39+0200 [-] [memcached-Default] _execvpe(file, args, env) 2016-05-12 21:40:39+0200 [-] [memcached-Default] File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 382, in _execvpe 2016-05-12 21:40:39+0200 [-] [memcached-Default] func(fullname, *argrest) 2016-05-12 21:40:39+0200 [-] [memcached-Default] OSError: [Errno 2] No such file or directory 2016-05-12 21:40:45+0200 [-] [twistedcaldav.memcachepool.MemCacheClientFactory#error] MemCache connection failed: [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectError'>: An error occurred while connecting: 2: No such file or directory. ] ^C2016-05-12 21:40:51+0200 [-] [twisted.internet.base#info] Received SIGINT, shutting down. 2016-05-12 21:40:51+0200 [-] (UNIX Port './data/Logs/state/caldavd.sock' Closed) 2016-05-12 21:40:51+0200 [-] [twisted.internet.tcp#info] (TCP Port 62311 Closed) 2016-05-12 21:40:51+0200 [-] [txdav.base.datastore.subpostgres#info] Requesting postgres stop via: ['/usr/local/bin/pg_ctl', 'stop', '--log=/Applications/MAMP/htdocs/CalendarServer-7.0/data/Logs/postgres.log'] 2016-05-12 21:40:51+0200 [-] [txdav.base.datastore.subpostgres.PostgresMonitor#error] pg_ctl: PID file "/Applications/MAMP/htdocs/CalendarServer-7.0/data/Data/Database/cluster/postmaster.pid" does not exist 2016-05-12 21:40:51+0200 [-] [txdav.base.datastore.subpostgres.PostgresMonitor#error] Is server running? 2016-05-12 21:40:51+0200 [-] [txdav.base.datastore.subpostgres.PostgresMonitor#info] pg_ctl process ended with status=256 2016-05-12 21:40:51+0200 [-] [txdav.base.datastore.subpostgres.PostgresMonitor#error] Could not start postgres; see postgres.log 2016-05-12 21:41:43+0200 [-] [twistedcaldav.memcachepool.MemCacheClientFactory#error] MemCache connection failed: [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectError'>: An error occurred while connecting: 2: No such file or directory. ] 2016-05-12 21:44:44+0200 [-] [twistedcaldav.memcachepool.MemCacheClientFactory#error] MemCache connection failed: [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectError'>: An error occurred while connecting: 2: No such file or directory. ] 2016-05-12 21:45:09+0200 [-] [txdav.common.datastore.sql#error] Transaction abort too long: PG-TXN<xmlDelegatesToStore>, Statements: 0, IUDs: 0, Statement: None 2016-05-12 21:45:09+0200 [-] Unhandled Error Traceback (most recent call last): File "/Library/Python/2.7/site-packages/twisted/application/app.py", line 405, in startReactor self.config, oldstdout, oldstderr, self.profiler, reactor) File "/Library/Python/2.7/site-packages/twisted/application/app.py", line 326, in runReactorWithLogging reactor.run() File "/Library/Python/2.7/site-packages/twisted/internet/base.py", line 1194, in run self.mainLoop() File "/Library/Python/2.7/site-packages/twisted/internet/base.py", line 1203, in mainLoop self.runUntilCurrent() --- <exception caught here> --- File "/Library/Python/2.7/site-packages/twisted/internet/base.py", line 825, in runUntilCurrent call.func(*call.args, **call.kw) File "/Applications/MAMP/htdocs/CalendarServer-7.0/txdav/common/datastore/sql.py", line 546, in _forceAbort self.txn.timeout() File "/Applications/MAMP/htdocs/CalendarServer-7.0/txdav/common/datastore/sql.py", line 1019, in timeout return self.abort() File "/Applications/MAMP/htdocs/CalendarServer-7.0/txdav/common/datastore/sql.py", line 1011, in abort return self._sqlTxn.abort() File "/Applications/MAMP/htdocs/CalendarServer-7.0/src/twextpy/twext/enterprise/adbapi2.py", line 736, in abort result = super(_SingleTxn, self).abort() File "/Applications/MAMP/htdocs/CalendarServer-7.0/src/twextpy/twext/enterprise/adbapi2.py", line 376, in abort return self._end(self._connection.rollback).addErrback(log.err) File "/Applications/MAMP/htdocs/CalendarServer-7.0/src/twextpy/twext/enterprise/adbapi2.py", line 368, in _end raise AlreadyFinishedError(self._completed) twext.enterprise.ienterprise.AlreadyFinishedError: released 2016-05-12 21:54:46+0200 [-] [twistedcaldav.memcachepool.MemCacheClientFactory#error] MemCache connection failed: [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectError'>: An error occurred while connecting: 2: No such file or directory. ] I have found this on the apple community forum https://discussions.apple.com/thread/6494327?start=0&tstart=0 Could you help me please to fix this issue ? Thanks for your support Best regards mparchet