We've been using Wonder Lister for a while now and overall it's a pretty good product. We primarily use it to manage our variation listings in eBay and it certaily helps. It is a bit clunky and outdated but it does the job (mostly). I suspect some of the problems are more related to eBay than Wonder Lister itself. That being said - in theory you are not suppoed to be able to download anyone elses listings from eBay to Wonder Lister - we have two instances installed - both the same version - one can only download our own listings the other instance can download absolutely anything listed by anyone. This for me is a significant risk.