Hi, 1. As I told you, it is a good idea, but I'm not using that method. I prefer checking file size (I will probably add file version in next versions). But this is not my priority now. 2. No, I'm not worried about resources right now. I want to have a solid and safe base and then start adding new things. 3. Same as above. Cheers Okay safe way of proceding! Good luck Hasta la Vista