I do have a separate folder for CAW with a small amount of store content in it. I suppose that could be causing my issues as well, but if I can't use the store content in my worlds then I don't care about making one. That's part of the reason I want to create my own so I can have everything I want without needing to add it with every new save.
I hope you can figure out what's causing your problem with the game, as I haven't had any issues in the actual game at all, just with CAW. I've been using Kaspersky for two years now.