I alread checked with adobe before installing on laptop, you can have it on own personal pc & laptop. This is not the problem as I stated it was working fine until I uninstalled it and reinstalled it using to leave the actiation on the laptop but since having problems with that I uninstalled with the option of transferring but neither of them made any difference to the problem I am experiencing. I also have to keep registering it every time I open the program (which I do) but it still comes up agin next time I reopen the program. Thats why my original question of maybe the registry still has ps keys,hence maybe a registry clean??