For those who are having the same problem as I (saving one listing, and not being able to save the next), I found a way to work around it.
Do a listing, save, sign off, sign back in, view saved listings, create similar, and SAVE.
Sign off again, back on, and so forth....
I received an e-mail from Auctiva today, telling me all about their NEW and IMPROVED site and how I should go visit it. HA!
Auctiva, please fix this mess.
PS: I know a little html, not much, but enough to have noticed all the extra tags.