output path in idea 9

Hello,

I'm using rubymine 2.01 and idea 9.0 with the rubyplugin. I've a problem when I use an existing rubymine-project in idea.
When I try to run an existing project, i get the following message:
Cannot start compilation: the output path is not specified for module xxx. Specify the output path in Configure Project.

I've specified the path in ModuleSettings/Project, but I alwayse get the message.

Any idea?

Thanks and regards

Frank