For reasons that nobody seems to understand, quite a few images generated by texvc have come out as 0 byte files. Whenever I check one of these empty images, the server returns a last-modified date of Sunday Nov 9 for the image. Shell access is needed to investigate further.
- Verify if all the empty math images were actually made on Nov 9. If so, this may have been some sort of transient bug. If empty images are still being created that's a bigger issue.
- Delete all the 0 byte math images that currently exist, so they can be regenerated.