Many thanks, Just-Lisa-Now. As it turns out I tried today to Update the ProSeries software. Everything went well but when it reached the "Self Help Host Assemblies" at 83% Complete the speed of updating slowed to a crawl...something it did not do yesterday. It took several minutes to complete this segment. After which I decided to see if the program would open and it did...as if nothing had happened.  (??) So, we're now good [at least for the time being]. I'm just glad I'd already finished all my returns. 

Thank you again. I'll remember your suggestions.