I'm having the same problems (Windows 10). I received the key by email from WinSoft. I can't copy the whole key that starts with ----KEY BEGIN---- [PTE] then a bunch of characters, then ----KEY END------ I can't copy the whole thing at once. When I copy each piece and put it in as it looks in the email, it does not work. If I just copy the [PTE] and the characters, it does not work. Any tips on what to copy and how to make this happen? Thanks.