MAME requires elevation - help

[kmancali]

I am trying to setup launchbox on a separate drive from my main computer, and am having an issue with launching MAME. I currently have launchbox setup with MAME and Retroarch to run Arcade, SNES, Dreamcast, Gameboy Advance, and N64 ROMS. My main system is on my "C:" drive and my emulators and roms (as well as launchbox itself) are all on my "E:" drive. In the Launchbox directory, I have my Emulators in a sub-directory "Emulators" (MAME and RetroArch in their own respective directories) and all game ROMs imported and copied into the "games" directory, then into their specific sub-directories. Retroarch works perfectly for all system ROMs for which it is configured (all but Arcade), but MAME will not run and pops up an error window with an elevation error: "An error occurred while trying to launch the game: An error occurred trying to start process 'E:\LaunchBox\Emulators\Mame0269\mame.exe' with working directory 'E:\LaunchBox\Emulators\Mame0269'. The requested operation requires elevation.". 

However, when I run MAME itself outside of Launchbox, it runs fine and launches the roms with no issues. I have already set MAME to run as administrator, but that did not help.

I also configured the launchbox directory to allow "Everyone" to have full permissions, but that didn't fix it either.

Here is my MAME (0.269) launchbox settings.

Any suggestions for how to fix this?