Continud Software Problems

I have loaded this program on 3 differant pcs using windows 7 and in each load there is always a problem with the program. Each error message is differant for each computer. I find it hard to beleive that this is possible since all my machines are runing fine with no issues. The latest load had the following error message: Acess violation at 0x004017B0 (tried to write to 0x004017B0), program terminated. I think the concept for your software is very eye opening but it is very discouraging to not be able to use this program at all. Plese advise.