If so, you may have accidently typed Qwerty keys when your computer was in Colmak mode, or vice versa, resulting in gibberish.
You can, of course just retype. But if it's a long enough string of gibberish, you may want a program that converts the mistyping.
You can get the source code for such a program here:
http://www.diffenbach.org/convertColmak.cpp