Rspec won't run all tests in a folder

I have looked around this forum and there are a number of similar posts, but my issue I suspect is slightly different.

I have a folder full of RSpec specs. When I try to run these, I get the following error:


"Empty test suite."


From reading some of the other forum posts, I suspect this might be due to the fact I'm not working on a rails project, and hence the spec_script file won't be present.
I'm running RubyMine 3.1.1 using RSpec 2.5.0
Please assist.