[Haskell-beginners] GHCI: Main function seems to mask other functions

Hi all, I'm having a weird problem where when I add the 'main' function to my program and load it into GHCI, whenever I check the type or try to run my other functions I get a 'Not in scope: <functionname>' error. When I remove the 'main' function and reload the code, the problem goes away. I can't seem to reproduce this with a trivial example, but this has happened to me several times in my larger programs. thanks ... deech