BTT fails to start

BTT suddenlty stopped working today.
Tried removing ~/Library/Application Support/BetterTouch stuff... no change.

I've tried other versions from, application simply fails to start.

The only log file I see is here:

 cat com.hegenberg.BetterTouchTool/com.crashlytics/CLSUserDefaults.plist                                                                                                  ⬡ 6.11.1
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "">
<plist version="1.0">

If there is a crash, look in the macOS under "user reports" for logs.

Do you have a license installed or are you using the trial version? Which macOS version, which mac model are you using?

In general there are now known crash issues with the current versions of BTT.