I've found that Dungeon Painter looks like a really good solution to my mapping needs. It's an easy to use tile-based mapper, which is great for someone with limited artistic skills. I'm having one problem with it: I can't get the add your own collection function to work. The packmaker only detects a single graphic per directory, and when I click the add your own collection button in the program and select the pack, nothing seems to happen. Does anyone know what might be going wrong here?