Sorry for the extreme late reply! In reference to my original issues, I got the controller issue fixed (Yay!) but my other problem remains in that I cant get Beavis and Butthead to load from the start. From my last post, I discovered that the game does in fact run properly IF I load a save file from it, however, I get booted back to the main EmulationStation screen if I try to start a game from the beginning. Here are the contents of my runcommand file:

Parameters:
Executing: bash /home/pi/RetroPie/roms/scummvm/+Start\ ScummVM.sh "bbvs-win"
Using joystick: SWITCH CO.,LTD. USB Gamepad
Virtual keyboard pack 'vkeybd_default' loaded successfully
WARNING: No hardware input were defined, using defaults!
User picked target 'bbvs-win' (gameid 'bbvs')...
Looking for a plugin supporting this gameid... MTV's Beavis and Butt-head in Virtual Stupidity
Starting 'Beavis and Butt-head in Virtual Stupidity'
Using joystick: SWITCH CO.,LTD. USB Gamepad
/home/pi/RetroPie/roms/scummvm/+Start ScummVM.sh: line 4: 1506 Aborted /opt/retropie/emulators/scummvm/bin/scummvm --fullscreen --joystick=0 --extrapath="/opt/retropie/emulators/scummvm/extra" $game

When I try and start a new game and get booted back to the main screen, this line of text briefly shows up...

*** Error in `/opt/retropie/emulators/scummvm/bin/scummvm': double free or corruption (out): 0x7ee9b2d0 ***

Any ideas, thoughts or help would be greatly appreciated!