AVR-Chat

Hi

Could anyone help me?

I have been sucessfully using the Tools/AVRProg function of AVR Studio 
4.12 to program my butterfly.

This evening in no longer works. I hit Flash/Program.  It erases, 
programs, and then during verification I get the following error in a 
dialog box:

Address 0x000, Expected 0x940C, Received 0x0100

Is my butterfly dead or can I fix this somehow?   It doesn't matter 
what hex file I try and program now, I always get this error.

Hopefully,

Andrew