Hi,
I have one issue with my OP installation. I have a specific user group which I cannot delete. Also I can’t delete any of its members or assigned projects. However, renaming of the group was possible.

When I try to delete it, I always get the message ‘Internal Error’ and the logfile contains the following:

Started DELETE "/admin/groups/40" for 192.168.101.20 at 2015-04-10 10:41:51 +0200
Processing by GroupsController#destroy as HTML
  Parameters: {"authenticity_token"=>"*REMOVED*", "id"=>"40"}
Completed 500 Internal Server Error in 20.9ms

NameError (uninitialized constant Meeting):
  app/models/watcher.rb:77:in `block in prune_single_user'
  app/models/watcher.rb:76:in `each'
  app/models/watcher.rb:76:in `prune_single_user'
  app/models/watcher.rb:47:in `prune'
  app/models/member.rb:204:in `unwatch_from_permission_change'
  app/models/member.rb:134:in `destroy_if_no_roles_left!'
  app/models/member.rb:192:in `do_remove_member_role'
  app/models/member.rb:97:in `remove_member_role_and_destroy_member_if_last'
  app/models/member_role.rb:93:in `block (2 levels) in remove_role_from_group_users'
  app/models/member_role.rb:93:in `each'
  app/models/member_role.rb:93:in `block in remove_role_from_group_users'
  app/models/member_role.rb:92:in `each'
  app/models/member_role.rb:92:in `remove_role_from_group_users'
  app/models/member_role.rb:61:in `destroy'
  app/controllers/groups_controller.rb:112:in `destroy'

A little bit of background information: The OP installation started with the initial 3.0.0 release and was later upgraded to 3.0.18. After this I realized that this error exists. Yesterday I switched to 4.0.9 but the error still exists.

Would be great if anyone could help me with this. Thanks in advance.

Greetings
Ben