[Please help with bigbox theme setup]

I selected a few but on the cabinets and screens the video previews don't play for games and consoles, I'm guessing I have to somehow go download manually all these videos myself and place them in the right folders? there is no way to have it scrape and look/fetch them is there?

[Problem launching mame games]

I installed Launchbox, I have the newest ver of Mame64 installed. It downloaded all the artwork for all my roms, 95% of them won't launch in launchbox. I have it set for mame. It gets to about 99% then jumps out of mame and back into launchbox.