Sage 50 Accounting 2012 Student Version

Hello,

Friday, 12/12/14, I downloaded the Sage 50 2012 Student version and it worked fine at first; however, I logged out and was unable to open it back up.

   "Error Message:  You have reached the maximum allowed connections to Peachtree Accounting. Please restart Peachtree when one of the other users has disconnected"

This is a single user computer and I don't understand the message. I uninstalled it and reinstalled and received the same message. What do I need to do? HELP!!

Thanks Brenda