Unable to create Diagrams....

Ruben,
for viewing Rails dependency diargam it's required to install Rails framework, generate a rails project and create at least one model. All the instruction how to do this with RubyMine can be found in our quick start guide http://www.jetbrains.com/ruby/quickstart/index.html

Thank you for the response.
The latest build RM# 119.14 update seemed to fix the issue.

Thanks again.