Super Cassette Vision won't boot directly from Mame4Droid Current but will through ES-DE

Hello, I have searched for help but cannot find a fix for my problem. I have been trying to boot Super Cassette Vison games directly from Mame4Droid Current but always get the "Required ROM/disc image..." message. I have the bios in the same folder as the roms, and if I press "Start empty" it will boot to the bios screen with the balloons, but cannot boot any game. The exact same roms will boot through ES-DE set to Mame4Droid. I would like to try to run them on a device that does not have ES-DE installed. Thanks very much in advance for any help.