gladminds

Hi, as the title suggest, I've installed Retroarch and have Mame 2010 roms working flawlessly within Retroarch. Unfortunately though, when i try and get this operating within Launchbox it doesn't work. I have followed all instructions and have imported the Rom in and set up the Emulator as Retroarch, with the correct emulator application path. The associated platform is Arcade with the mame2010_libretro core. As above, when i click play on the game within LB, nothing happens, when i right click on the game and select Launch with Retroarch and select the core, again nothing happens apart from the cursor spinning for a few seconds. Been messing with this for days now and its really starting to frustrate me. Can anyone help?