Hello Texx -
The templates will support up to 24 images using the Auctiva Image Selection area of the listing creation page. If you wish to add further images to a listing, you can also use the Insert An Auctiva Hosted Image tool in the description editor to add any image you have stored in your Auctiva account directly to the Description area of your listings at full size.
We will not be able to move back to the prior supersize function as that utilized a link to a non eBay page, which is now a violation of eBay policy. The current function enlarges the images directly on the listing page.
seanice - it sounds like you may be using a customized template. Currently there is a known issue such as you have described when using a custom template. We are aware of this issue and are currently working on a resolution and will update this thread when more information regarding that issue becomes available. If you have run into when not using a custom template, please file a support case from under the Help tab of the site letting us know some examples of where you see this so we can look into it further.
(javacentric, please see response to you same question in the other thread in the Listings area)