Hello again Student68,
 
Thank you for contacting us. Sage ID is a signin for our Sage Drive service which isn't a part of the 2015 software so something is corrupt. At this point it may be best for you to contact your teacher, who could then contact us at 1-888-522-2722 with the school's Account ID to organize a support call.

Questions we'll want answered include:
- What is the "other" version of Sage 50 on the machine
- What operating system is it?
- Is it the Sage 50 2015 Student edition?

At that point we can check if Windows Corruption on the machine is the issue and offer some suggestions / steps to take.

Hello again Student68,
 
Thank you for contacting us. Sage ID is a signin for our Sage Drive service which isn't a part of the 2015 software so something is corrupt. At this point it may be best for you to contact your teacher, who could then contact us at 1-888-522-2722 with the school's Account ID to organize a support call.

Questions we'll want answered include:
- What is the "other" version of Sage 50 on the machine
- What operating system is it?
- Is it the Sage 50 2015 Student edition?

At that point we can check if Windows Corruption on the machine is the issue and offer some suggestions / steps to take.