Why do the equations fail once I rename the assembly?

I have starter assembly with equations. When I use the starter to create new assemblies for a job, the equations seem to have a fit. They still do what they are supposed to do, but when I reopen the assembly fails. Hitting refresh corrects the failure.

When creating the new assembly file from the starter, I rename the assembly. There is a pop-up, I always chose yes.

The assembly has no configurations (though the parts do).

I have been generic because I have more than one starter with the exact same issues. So it's not a problem with THIS starter. It is something in the way I'm setting up things.

Could it be a problem when using multiple versions in one assembly? Are equations in conflict somehow?

SolidworksModeling And Assemblies