Re: Sage 50 2012 Won't Open
Posted: 03 Jun 2026, 13:56
We are running Windows 10 - Is there a suggestion on what we can do with Sage to avoid this issue happening?
The issue is caused by you having opened the data set with 2 different version of Sage50.
This is not uncommon.
When you restore a backup that has been on a newer PC then it will expect you to upgrade to that same version, to do this, there is a watermark.xml file which advises Sage what version it was last used with.
I suspect that you had applied all the updates in the past and so got onto a later version than your reinstalled original version.
You could apply the updates to get to the latest version of V18 or leave things as they are, you should not have issues going forwards either way.