The cause for your problems might be a corrupted database file. Please try to delete the gr6db and gr6dbLock files from ~/Library/Application\ Support/Native\ Instruments/Guitar\ Rig\ 6/Database/. I hope this helps.
Crash in standalone, also using Rosetta. I'm trying with different daws and the same result. I think there is a problem with macOS 12.3.1. A friend of mine with macOS 12.2.1 has no problem with guitar rig 6.2.2.
Hi, this was helpful. I was running M1 MAC Monterey 12.4 and it was crashing when trying to launch using in standalone app (not in a DAW). Initially removing the db files did not help but removing the two db and kad file allowed it to launch and work successfully.
Please double check the file path to the database. The folder is in the user library and not the local one. The full path is as follows: Macintosh HD / Users / User Name / Library / Application Support / Native Instruments / Guitar Rig 6 2b1af7f3a8