Navigating between Test and Test Subject not working

Hi,

I migrated from Minitest to Rpec in my Rails 4 app. I just deleted the test folder, installed the rspec-rails gem and ran rails generate rspec:install.
I also attached the rspec gem (or rather let RubyMine 6 find it automatically in my Vagrant VM).

Unfortunately navigating between test and test subject istn't workin: "No test subjects found"!
It was working before!

Is there anything else I have to do?

Regards,
Stefan