Perhaps you did not read the entire post:  At no time did I ever explain that I have a file problem.  This "answer" does not address any part of the issue I just described.

This is a program issue.

My problem:  Program won't open when another file is open.   <--- Application issue!  the "Application" is not working normally.

File Dr.: Fixes "File" problems only.

See what I mean? This kind of misunderstanding I always get from QB support.  They simply pop off an answer before they've even taken the time to read the entire question and come up with a completely unrelated answer due to a lack of paying attention.  This is how our support goes each and every time...

And by the way, this is a canned pre-written answer that already exists in the knowledgebase.  This person put zero thought and effort into this.