Last night's kitchen is corrupt, and I think the night before was also.
Problem: mxip_startmenu.provxml is missing from RZ\EXT\Baseline\6_end\zzzzzzzz_Baseline\files and subsequently causes a crash on startup when customization occurs. Phone freezes and it kicks out an error about the provxml is missing.
Solution: I copied the mxip_startmenu.provxl from an older kitchen and put it in last night's. It worked fine. No crash.
Just thought I'd throw that out there because it appeared to be missing in 2 kitchens in a row and I had an error with customization in the last kitchen, just couldn't narrow it down. Cheers