I'd say installing into /Applications/MacPorts should not be considered an mtree violation. Check this out: $ sudo port install minivmac ---> Fetching minivmac ---> Verifying checksum(s) for minivmac ---> Extracting minivmac ---> Configuring minivmac ---> Building minivmac ---> Staging minivmac into destroot Error: Target org.macports.destroot returned: no files matched glob pattern "*" Error: Status 1 encountered during processing. $ That's a weird error message. Let's try it again. $ sudo port install minivmac ---> Staging minivmac into destroot Error: Target org.macports.destroot returned: no files matched glob pattern "*" Error: Status 1 encountered during processing. $ Ok. One more time. $ sudo port install minivmac ---> Staging minivmac into destroot Error: Target org.macports.destroot returned: error copying "/opt/ local/var/macports/build/ _Users_rschmidt_macports_dports_emulators_minivmac/work/projects/ bgcmachs/minivmac.app" to "/opt/local/var/macports/build/ _Users_rschmidt_macports_dports_emulators_minivmac/work/destroot/ Applications/MacPorts/Mini vMac.app/minivmac.app": file already exists Error: Status 1 encountered during processing. $ Whoa. Why do I now get a different error message? Let's start over and see if debug info helps. $ sudo port clean --work minivmac ---> Cleaning minivmac $ sudo port -d install minivmac [snip] DEBUG: Executing org.macports.destroot (minivmac) xinstall: mkdir /opt/local/var/macports/build/ _Users_rschmidt_macports_dports_emulators_minivmac/work/destroot/ Applications/MacPorts DEBUG: Executing destroot_finish DEBUG: checking for mtree violations Error: Target org.macports.destroot returned: no files matched glob pattern "*" Warning: the following items did not execute (for minivmac): org.macports.activate org.macports.destroot org.macports.install Error: Status 1 encountered during processing. $ Well, not exactly. Presumably the glob that's being tripped over is this one at line 233 in src/port1.0/portdestroot.tcl: # test files in ${prefix} foreach f [glob -directory "${destroot}${prefix}" *] { This port installs no files in ${prefix}; only one application into /Applications/MacPorts. There are many other such ports (see the aqua category for example); they must all be experiencing this error now.I think we will need to fix this quickly and release a 1.511 soon.