Hi John,
Thanks for contacting us regarding this matter.
I am not aware of any current technical difficulties that would explain the errors you have reported receiving, so we will need to look into this further to determine what is preventing you from being able to relist these items successfully.
It sounds like the errors may be related to issues with the inventory items these listings are associated with, but we will need to review the specific listings and the related inventory items to get to the source of the issue.
Please contact our Customer Support team directly from under the "Help" tab on our site and we will be happy to look into this further.
-Mike