SF 1.7.7 / Engine 1.11.0 requried, 1.11.3 and 1.11.1 installed?

The install did not replace all components. This is an issue with the OS X installer.

You can just install again, having all components checked, and everything should be fine.

FYI: The 'Engine' consists of 3 components:

1. The 'Queen' framework, being part of Synfire Pro.app
2. The Engine.app, Scanner.app, etc. apps in /Library/Application Support
3. The Transport.bundle in /Library/Application Support/Propellerhead Software/ReWire

For whatever reason, these have not all been replaced to the current version.

I'm also getting an issue on Windows.  I'm not using the engine currently, but I tried loading it to test (by clicking Use Audio Engine in Settings).  I'm getting 'The Audio Engine does not report back to Synfire' message.  This message only gives the option to retry, so I have to task manager Synfire to get rid of it.  Should there also be an option to quit in these cases?

Anyway, I'll try reinstalling the engine manually if I can figure out how to do it!

It's a similar issue.

Uninstall with Windows Control Panel, then reinstall.

I had already done a reinstall manually by using Repair and it seems ok now.  It asked me to do a reboot on the 64 bit engine (it didn't originally) so maybe that was the problem.

Incidentally, I thought I'd check the engine version, but doing Settings >> About doesn't do anything.

1.7.7 update package installed flawlessly at my W7x64 system.  First ran the Synfire pro installer. Then the Cognitone Audio Engine and Cognitone Audio Engine (x64) installers, pointing them both to the correct respective previous installations (in my case ...\Program Files (x86)\Cognitone\Audio\) and ...\Program Files\Cognitone\Audio\ )