Broken pipe ghci

Hi all, I have written an application, that for some reason I don't yet understand, crashes. However, when I run the application in ghci, at the moment it crashes ghci crashes along with it. No error messages are given. Both my application and ghci just stop. When I compile it, and run it as a stand-alone application, when it crashes it just stops as well. Again, no error messages are given. What could be wrong? Regards, Robert