This version has a very mysterious bug:
Sometimes when I try open a specified directory with a specified file the
program exits with a X11-erro message.
The file itselft is an ordinary file with no special extensions. All used
pixmaps for this file have been loaded and used before without no error
messages.

I am currently not able to give any solution for this bug, cause I don't know
exactly what causes this malfunction. Probably I mixed some pointers, but
I would expect coredumps sometimes but now x11-errors.

Cause I don't have so much time to fix this bug these days, I decided to
release the beta version of release 0.5.0 allthough the bug still exists.

Sometimes it works to recreate the file, but this is no solution in generally.

