LTPowerCAD crash when opening file

Hello.  I recently downloaded LTPowerCAD II v2.7.3 and it is displaying the same crashing problem. 

When I attempt to open ANY past LTPowerCAD files that I had designed a year ago or so, none of them will open, regardless of what IC it is simulating.

I even just created new files with just some random, fairly simple switching ICs (LT8604 and LT8619).  When asked if I wanted to start with the default design file I said 'yes'.  Without changing anything, I confirmed that the simulations were working correctly.  And then promptly saved them without making any changes.  When I attempted to open these default designs, they still crashed.

I did a full uninstall and re-install of the program, and it still displays the same problem.

Does anybody have any recommendations for this?

Hello.  I recently downloaded LTPowerCAD II v2.7.3 and it is displaying the same crashing problem. 

When I attempt to open ANY past LTPowerCAD files that I had designed a year ago or so, none of them will open, regardless of what IC it is simulating.

I even just created new files with just some random, fairly simple switching ICs (LT8604 and LT8619).  When asked if I wanted to start with the default design file I said 'yes'.  Without changing anything, I confirmed that the simulations were working correctly.  And then promptly saved them without making any changes.  When I attempted to open these default designs, they still crashed.

I did a full uninstall and re-install of the program, and it still displays the same problem.

Does anybody have any recommendations for this?

I've fixed the problem.  I did a full uninstall, again.  And downloaded the latest version again.  This time when I opened it, it showed the version being v2.7.6 instead.  Also, when I installed it this time, I ran the install setup file with administrator rights.  

I don't know if was the newer version that fixed it or installing it as an administrator.  But this seemed to fix the problem.