Hi
After carrying out the latest recommended update, I get the following error:
XUL Runner
Error: platform version '15.0' is not compatible with
minVersion >= 15.0.1
maxVersion
New: Kanri (Oct 09, 2024), Platform 29.5.3 (Jun 27, 2024)
1,100+ portable packages, 1.1 billion downloads
No Ads November!, Please donate today
This nearly always indicates profile corruption or an incompatible extension. I would first try re-installing right over the existing version. Then, try starting in safe mode (from the command line, start ThunderbirdPortable.exe with -safe-mode after it) and see if it will start and start troubleshooting extensions.
Sometimes, the impossible can become possible, if you're awesome!