Try the new Lacerte Tool Hub https://proconnect.intuit.com/community/help-articles/help/fix-common-problems-and-errors-with-the-l...

Since you are having problems with an older program, I would use the FORCE reinstall of the program. That would HOPEFULLY correct any program issue. 

I assume you have done the REP unlock 

This MAY be a problem upstairs, https://proconnect.intuit.com/community/lacerte-tax-discussions/discussion/rep-access/00/117561 seems to have never been resolved. 

I hate sneaky little Gremlins like this.