What a nuisance. Ever since eBay deleted active content there have so many glitches.

A computer friend of mine said eBay most likely changed servers at the same time.

I can suggest perhaps keep a 30 day listing up as a template, just put something in the title as being a test listing and then you can always go to that just filling in item specifics.

With nearly 500 listings I am surprised you don't use a basic store, you get more free listings.