>VFP 9
>I just lost a day's work when all methods in a large class library went blank.
>I have a back up from yesterday but all of today's intense work is gone.
>Every method in the class library is there but with no code.
>Arggggh!
>Any ideas before I start over?

What about the compiled code? If the compiled code is still in the VCX, you could regenerate with Refox.