Redmine

When i create a new issue all its ok, but without parent task. When i try to write a parent task the program get the information (tool tip) but this accion log out the aplication, so its imposible to create new issues with its parent task.

About your application's environment
Ruby version 1.8.7 (i486-linux)
RubyGems version 1.3.7
Rack version 1.1.1
Rails version 2.3.11
Active Record version 2.3.11
Action Pack version 2.3.11
Active Resource version 2.3.11
Action Mailer version 2.3.11
Active Support version 2.3.11
Application root /opt/redmine112
Environment production
Database adapter postgresql
Database schema version 20110228000100

About your Redmine plugins
Issues XLS export 0.0.7
Redmine Backlogs master branch (unstable)
Redmine Ms Projects plugin 0.1.0