Why does clipboard from FF shut down Microsoft Works?

Any idea why clipboard contents copied from a web page in Firefox, would not paste into Microsoft Works? I can paste to Notepad or Wordpad, but if I try to paste to Microsoft Works, the Microsoft program shuts down every time. I can, however, paste from IE to Microsoft Works, so it seems to be a Firefox setting somewhere, but I can't figure out where. == This happened == Every time Firefox opened == I first downloaded Firefox