help with CXMB

I just re-installed CXMB because I was getting a bit tired with the standard XMB, right? So I moved the files around, activated the .prx, blah blah blah, and went to activate a custom theme. The PSP reboots/refreshes, and the XMB comes up again. I frown, wonder why, then check all settings that might have something to do with it. Nothing stuck out at me...please help? I'm running 5.00 M33-6 on a standard phat/1000. Thanks in advance...

Well, there's always one problem. Is your theme compatible with 5.00 M33-6? Secondly, it might have something to do with your cxmb.prx, because in some cases BOTH the Lite and the Full version have outdated stuff. Do you have the Lite installed or the Full?