> Is there any way to recover from something like this, or will I need
> to go back to a fresh image? I have a fair bit of code already
> written, and I'd rather not lose it.

You should go back to a fresh image, but you shouldn't lose any code.
The .changes file contains a log of all your code.  Your code will be
at the end of it.  Because everything is logged, you might want to
pick and choose the changes that you apply to the new image, but all
your code is there somewhere.

-Ralph Johnson