I am trying to use Sequel, ActiveRecord or Datamapper with MacRuby and XCode.  So far I haven't had any success.

Environment:
XCode 4.2 Beta
MacRuby 0.10  and 0.11-nightly
Sequel 3.28
ActiveRecord 3.0.10
Datamapper 1.1.0
Sqlite3 1.3.4
Sqlite-ruby 1.3.3

Both ActiveRecord and Sequel die in IRB  (segmentation fault: 11) when I try to access the data table.  Datamapper doesn't even load in IRB for me.

Has anyone had any success with any ORM in XCode?

- Jon