Spiraling nightmare - mail crashes - error

[TheBundo]

First, here is the message I get now in a popup box "SORRY" when I try to start the mail client:

"The application Mail (processcom.htc.android.mail) has stopped unexpectedly. Please try again."

How I got there, when virtually everything was working great, was after doing about 40 app updates last night, I suddenly started getting the "chooser" box when I hit the Home button, asking if I wanted to use HTC Sense or Launcher. I also noticed that Sense showed up in the last 6 programs box (when you hold down the Home button), and I don't remember that happening before.

So I decided to try what always worked on the WM phones, just Restore from the previous night's backup. I first used MyBackup, but it was an old backup, then I used Titanium, and it seemed to Restore everything from every backup it had ever made, jamming the memory with stuff I had long since deleted as well as the more current stuff. I need to find a better backup program, because neither of them Restored the 7 main screens very well at all.

At least the phone works. Oh, and I still get the stupid Chooser box when I hit the Home key. Frustrating, but I need to get my email back the most.

Is there any program to verify system files, or does someone know what is causing it to crash on startup?