Do you have any source control in play here? If so, you probably need to remove the project from it first, upgrade it & then check it back in.
Thank you for assisting. Please define 'source control'
Robosource, GIT, SharePoint, SVN, etc. etc. – any sort of repository system where multiple authors check-in/out project topics
No. Working of my C drive by myself.
Do you still have RH10 installed? Can you open up a copy of the RH10 project (from a backup copy) to see if it’s ok in RH10?
I do have it installed. And I will work with our IT guys to see if I can go
backwards. I do have all my source files backed up. I will have to reply
Thank you for your guidance so far.