I have tried to set bids for several items and get a number incorrect error message. Please help.

Hello Toby,
Thank you for your question about this UK item number. Is this still occurring? We couldn't reproduce this problem on our end -- although we did have a report or two of this immediately after our software release.
Please let us know if you are still having any issues, and we will take the next step.

Yes it is still the case,

Okay. Is it possible for you to send an item number for an auction that ends several days from now? We only need 1 or 2. That way we have a little bit of time to reproduce and fix it. Thank you in advance.