I've got TI 7. Downloaded update from TI 6. When I try to run TI, I get 2 error messages: "Error #1874 configuration file not found" & "failed to create the scheduled task" (Error # 1722)--"The RPC server is unavailable". I un-installed TI 7 and tried to re-install from the Acronis folder. It wouldn't accept my registration number. I'm running windows ME. I've got GoBack enabled. (This is no problem on my XP notebook). Even with GoBack disabled the same problem happens. I've had successfull saves up until June 05. I save to an external HD. How do I solve this problem?