Do you know how to check the solution's CONFIGURATION SETTINGS?
If so, check to make sure you are in DEBUG mode. Then, make sure you do a BUILD on your test project (which should then also do a build on your dependant projects).
Once that is done, try and run the test again.
When you run the test, make sure the cursor is INSIDE of the FACT you wish to debug (which calls other methods, etc).
Try that stuff and report back.