ah, I see the error code for the right hand "immediate error".
Your opencomposite.ini file should look like this. Put a " ; " in front of line 2 and line 7
;Mirror mode outputs a shared texture for use by OBS plugin
;Performance stats enables writing of performance stats
; If enabled press F11 to start stats capture to file
; File is currently output to \Program Files (x86)\Steam\steamapps\common\Assetto Corsa Competizione\AC2\Binaries\Win64\teststats.csv
;Hidden area mesh fix for G2, may work on other headsets
;Use OpenXR layers to handle GUI overlays and HUDs, if set to false will render internally directly onto swap chain before submitting
also, the most current version of Toolkit is now at version "1.1.0"