Black Screen - Can't boot RetroPie

My rpi3 b+ with the latest OSMC build (2018-12.1), standard skin, and RetroPie will not start RetroPie. I installed OSMC and RetroPie via this link - [HowTo] RetroPie and OSMC: Retrosmc - Retrogaming on OSMC. I can start emulationstation through ssh or the terminal, but not through the GUI. Both the programs add on and the additional menu item I created send me to a black screen for a few seconds, then back into the OSMC home screen. I have tried rolling back OSMC to an older build, disabling CEC, running the install multiple times, updating all scripts and packages, and completely started from scratch (formatted the sd card) several times to no avail. I enabled debugging, rebooted, tried to start retropie, and uploaded. The log looks blank. Anyone able to help?

Might be this issue:

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While that fix works temporarily, the Pi keeps reverting the script back to the original version. Any idea how I can make it pervasive?