Today i downloaded application MyMenu and after some time i thought that i don't actually need it and i had uninstalled it.

then. in my menu icon MORE.. disappeared and now i can't use any program like AppManager, Xterm and all applications that i had downloaded before.

i thought that i should use my backup but i can't use it too.!

may be it is some kind of bug, but how can i fix it?
Thank you for your help.