Getting flooded with error messages-Can't use phone

[Grateful Dave]

Okay, I was just too happy. I flashed the MidNIGHT ROM 4.2 two weeks ago. All has been great. I finally had the smartphone I thought I had originally bought. All was great. I switched batteries (if that makes a difference) this afternoon and ever since then I get the FC messages that the MTM gingerbread app, Google Service Framework, phone, and other message that say that the application has stopped unexpectedly, try again. Can't dial, receive call, or much else.I just get a series of these error message. . I have taken the battery out and replaced, cleared the cache in CW MOD. I downloaded Touchdown, Dolphin and Docs to Go on Sunday. All were working well until this afternoon.

Please help. What can I do? Any ideas about what went wrong? Thanks!