>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?

Make backup copies of what you have now before you do anything else.

You could try opening the VCX as a table, then looking at the memo fields to see if your code is still there.

Look in your temp files folder for any files later than yesterday's backup. Of those that look about the right size, try renaming them to YourClassLib.VCX and see if you can open them in VFP (either as a classlib or as a table).

If you have a recently built EXE or APP that includes that classlib it might be possible to extract it from there.

If it looks like there may be code in your VCX but for some reason it doesn't show up in the VFP IDE, you could try renaming your FOXUSER.* files in case something got corrupted there.