I did fix it with BootMii, I just reinstalled my old .CSM Theme... I just want to know what I did wrong.? My System Menu is 4.0U. I did everything the same as my first .CSM theme, I took my 00000072.app and my 4.0/4.1.MyM theme and combined them with "MyMenu PC program". Then I installed it but after the reboot I got the System Menu is corrupt message, or something like that. ^.^" There is a RunFirst.MyM file with the theme am I supposed to use that some how..? I just started using the new .CSM themes yesterday and I want to learn more about them, is it realy easy to make you're own themes with this? THANKS!