After installing a theme posted here, my 8900 went into a tailspin, dreaded white t-mobile screen, got it back but now have lost the 'all messages" icon, video icon, and camera icon.
This happened once before and I wiped.
This time I'd rather not wipe. Ewwww. Sounds nasty.
I had this issue. Change your theme, then delete the theme causing trouble (under options-advanced options-applications-then the theme(delete it)). Then reset your device when it asks and you should be ok
Posted from my CrackBerry at wapforums.crackberry.com
Like Clint said: Switch to one of the default Precision themes, restart and then switch back and you should be good to go. This is a common problem with any theme other than the Precision theme because they are Beta.
I have been tinkering with Plazmic and worked up my first theme. It is almost finished and I was looking forward to installing it. After reading all these horror stories I think I will just wait until the official release. Thanks for all the warnings!