SAme issue here.....
I run a dedicated PC, only for
Blue Iris. I paid the $29 upgrade fee and did an update then it said I was version 5 eligible. Installed it, loaded all of my cameras automatically form the prior version I guess. It was running fine then I was having trouble with a Wyze cam that i lost connection to,(prior to upgrade) was trying to get that one working again and now it won't launch.... at all no errors....
Best solution is a re-install of windows? Seriously? the reinstall BI, and have the export file? to import them?