I downloaded the torrent for a full rom set of 0.254 mame from archive.org. It downloaded 80+G and appears to a full set. I have a fresh install of LB and want to use its wizard to import the roms and setup mame. I installed LB c:\LaunchBox and created a subdir 'Games'. Placed the folder with the rom zips in the c:\LaunchBox\Games directory. When I run the import full mame set selecting the folder a message pops saying "the specified folder does not contain a full mame set". Followed these instructions exactly from a tutorial video.
This is the bottom of the rom folder directory listing -- does it look accurate?
04/27/2023 05:07 PM 2,482,101 z80ne_flop.zip
04/27/2023 02:50 PM 554,018 z88_cart.zip
04/27/2023 07:37 PM 8,670,057 zorba.zip
04/27/2023 03:02 PM 8,224 zx80_cass.zip
04/27/2023 03:36 PM 3,605,723 zx81_cass.zip
649 File(s) 87,358,982,806 bytes
Please advise and thank you!