Hi,

here are the steps:

- create a new Ruby project based on existing sources
- choose the directory where the sources reside as the project directory
- try to add the same directory again as the source directory, this won't be allowed
- close dialog, project is created
- observe there are no files in the project
- select project properties
- add the same directory again, this time it is allowed
- project appears to function OK 

I think the correct/intuitive behavior would be to automatically add all source files in the project directory to the
project. This is different than the current behavior but I found the current behavior confusing.

Thanks for a great IDE!