everytime i open Adobe Media Encoder a messege pops up saying 'Red Giant licensing error'. and then the app doesnt open. anybody else experienced this?
As @Warren Heaton10841144 mentioned, you'll want to use the Maxon app. A lot of people still seem to be using the old Red Giant Link app. If that's what's happening here you should completely remove that, then install the Maxon app where you'll be able to login with your Maxon account.
The Red Gaint plugins are a 3rd party product that is licensed through the Maxon App for their current plugins or the stand alone installers for the older versions.
You either want to uninstall these plugins or license them.
I'm having the same issue, media encoder keeps crashing on me, I literally can't export anything. I tried moving the "plug-ins" folder, did not work for me.