Hi, you don’t say how old your ebay unsold listings are! There have been some changes to listing requirements that Turbo lister has a problem with, most common is that all UK listings must now have a Paypal payment option to be able to upload.
Secondly, regarding your images, if you still have the originals try deleting the image from your Turbo lister file and re-attaching from your own folder, or re-photograph the items.
Thirdly, if your previous listings used Turbo lister from more than a year ago they are probably incompatible with the new Turbo program.
Finally, importing complete listings into Turbo lister is not always successful; you can copy and paste bit by bit (very lengthy process) and build up a new listing quicker than starting from scratch. Worth trying just once to see if it overcomes the problem.