ArcadeOS - insufficient disk space or bad command or file name

[pinballtoys]

hello
looking for a little help with a friends cabinet
running arcadeOS 2.50L standard

when you select ANY game from the list it initially says 'loading' in a dialogue box, shortly after  'insufficient disk space or bad command or file name' appears and then reverts to selection screen.
i can't see that its a drive storage problem, more likely its not looking in the right place to find the ROMs?
I've searched for help/manual on arcadeos but had no luck
hopefully somebody can help me out
cheers Bob
 
drop link for a short mp4 of problem   https://www.dropbox.com/s/4clrgmiq02ulm7i/VID-20190915-WA0000.mp4?dl=0

[Mr. Peabody]

"I figured it out, I used AdvancedCD instead and it works."

https://atariage.com/forums/topic/44192-arcadeos/