Same Jon as the Mac blog comments. I have the windows and mac bundle (which is why I posted on the Mac blog).

I have a different crash log in Windows and the automatic v5 upgrade removed version 3. I did not manually download v5. I had no idea there was a v5 until Airfoil upgraded itself Thursday night and the new version appeared on screen with a Trial Mode button.

There is a workaround. I uninstalled the v5 trial mode and reinstalled v3.67 to a unique folder. Everything looks fine. And it looks like the v.367 upgrade feature (both automatic and Check for Update) keeps you at v3.67. My paid license appears correctly. There was a big window advertising the version 5 upgrade but it only showed up the one time. I never saw this before.

Since a handful of Windows users posted this problem, it appears there is a bug in the Windows upgrade process. Maybe the Airfoil upgrade service updates itself first to v5, then upgrades the software to v3.67. I wasn't paying attention the first time. If I had to guess, it would be the Windows upgrade workflow from a legacy paid license dating back several versions and remaining in the same folder. Without knowing windows versions, upgrade and license history, and other software installed, it would only be a guess.

For all the comment trolls here attacking other paying customers, grow up. There should be no need for a workaround for software that worked perfectly fine on Wednesday.

Paul - thank you for posting the link to the legacy section. Please let us know the upgrade cost for the bundle clients. Is it $15 for windows + $15 for mac?