It seems that you're confusing M-x find-file and M-x load-file, the
former opens a file into Emacs and the latter loads a Lisp library
file...
As to why Emacs crashes when you use the menu or toolbar, I don't
know -- and the version you're using is quite old. Try upgrading to
a newer snapshot.
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Public bug reported:
Binary package hint: emacs-snapshot
using GNU Emacs 22.0.50.1 (i486-pc-linux-gnu, GTK+ Version 2.10.3)
of 2006-09-20 on rothera, modified by Debian
as packaged in emacs-snapshot-gtk, Version: 1:20060915-1
Emacs starts normally, with or without splash screen and either from