Hi aitchisonj,
To view the specific errors returned in response to your failed postings, please click the "Scheduled" link under the "Listings" tab or the red value in the "Events" section at the upper-right corner of your Auctiva account.
If the errors suggest that you need to contact Auctiva support for further information on why your listings failed to post, please file a support request using the appropriate link on our help page:
http://www.auctiva.com/free_auction_software_help/help.aspx-Mike