[COLECOVISION EMULATION]

Interesting, I had first tried Retroarch but could not get Colecovision to run using the bluemsx_libretro core. 

[COLECOVISION EMULATION]

Okay, after I added a new version of MAME for use with consoles, good tip  I then updated my LB Emulator to point to the new version of MAME then copied over the coleco bios zip to the roms folder. I also launched the new version of MAME to create the mame.ini file opened it then pointed the rompath to the location of the coleco roms and it works. Thank you for the guidance. Also, tested the ini file with a space in the rom path location and it did work with and without a space. So the fix for me was to have two versions of MAME one to use with MAME and it's roms and the other for use with consoles such as Coleco, Neo Geo etc.

[COLECOVISION EMULATION]

Yes, I have the mame.ini in the mame folder. See my mame.ini rom path did I type something wrong? If I can get this working then I'll create a second mame for the other consoles

[COLECOVISION EMULATION]

Thanks Lordmonkus. So, this is how i have my coleco zip file in the mame roms folder see attached, and the game does not load. Also here is the example of a game path from launchbox where i have he celoco .7z files listed under the games folder.  I also used a zip file for the game roms but id did not change anything. Seems like the emulator  "Mame" launches in LB but when it try's to load the coleco .col file that is 7zipped it fails.

[COLECOVISION EMULATION]

I'm having the same issue. Watched the video several times. Have the colec.rom bios in the zip folder of Mame roms. fire up LB and the 1 second flash as mame tries to load the game but nothing happens. Tried to move one coleco rom file into the mame roms folder but that didn't help. Must be missing something simple and overlooking it. Any ideas?