When re-registering, ensure you copy the block of text from the email Scooter Software sent you, including the --BEGIN-- and --END-- headers. Extra whitespace or missing characters will cause a "Bad License Key" error.

If you believe your key was revoked in error, the "happy ending" to this story involves reaching out to the developers directly: Email Support : Send your serial number and original order email to support@scootersoftware.com

The "license key has been revoked" error in Beyond Compare 4

: Instead of the green "Registered" checkmark, a red error message appears stating the key has been revoked. The Result : The software reverts to Evaluation Mode

Do you need help to contact support?

Best for: Warning others who might be using leaked keys.