Comment 3 for bug 329055

Try running: kmymoney2 -n
That will open kmm with no file open. Go to Configure, Home page settings, uncheck all. Try opening your file now.

If that doesn't work, can you get a backtrace of the error?
Here you can find the instructions on how to do that:
http://forum.kde.org/how-to-get-a-backtrace-of-kmymoney-t-32596.html

That should help us find where the problem is.