unable to load launchbox after update

[mrbigjonstud]

so a little background info, windows 10 if that matters and I'm pretty tech savvy about fixing application issues.
I have not been able to update launchbox since about a full year.  I can load it just fine using v13.18  and I have tried many different updates since then including the last one 13.24 .  if I click the main exe nothing happens, no errors, no crashes, it just sits there.  also verified it's not running in task mgr or anything.
I checked a few guides that mentioned something about a dotnet compatibility issue with certain plugins but I have no clue how to troubleshoot that. 
also my logs folder is empty currently. I tried rebuilding my settings.xml file, but same issue.

for now all I can do is downgrade it back to v13.18 and it works perfectly.

any ideas I can try to fix this? 
thanks for any help you can offer.