This just started happening when I synced up to the
repository upon seeing the announcement of 0.6.2. I
have no easy way to go back because the old tar file is
not in the download section and there is no cvs tag.

The user said:

I added a comment, changed the status, and the owner
and it was when I clicked submit that I got the error. 

I have been able to make this happen again once.