Forester, I'll take a look amd see what it's all about. Thanks for the lead. And Trendmaster, I didn't know that rebooting my PC would get rid of the I/O error. I'll give it a try here shortly and let you know how it goes. I recently scrounged up the money to buy Ultimate Unwrap 3D and it looks quite complicated. I'd say the interface looks to me like a complexity level somewhere between UV Mapper Pro and Blender which looks incredibly complicated to me. But all in all, I believe you're right in that it would be a good thing to learn new software, instead of relying on something from a few years ago, which the developer clearly doesn't care about any longer. I'd still like to have UV Mapper as an option if I can, but I'll see how things go. I'll let you know when I get the chance

Here's the link to my freebies:   https://www.renderosity.com/mod/freestuff/?uid=493127

"I can't stand it when people pointlessly repeat themselves. I can't stand it. I really can't!!"