I noticed today that about half of my MAME roms aren’t loading. All of these roms worked in the past. When I open them they say “initializing” for a split second and then close. The other (roughly) half of my MAME roms work fine. Anyone else having this issue? Is this problem related to the MAME update maybe? Thanks

    Hi kjb7777, i'm sorry for the incovenience, we updated the MAME to version 2.3.1, some roms will not work in this version, you will need to download new compatible roms.

      13 days later

      I'm having this issue too with a lot of my roms. Is there a surefire way to know if it's a compatibility issue with the latest MAME for a given rom?

      Hey folks, like Saulo mentioned, we updated MAME recently to a newer version, and certain ROMs may be incompatible with the new version.

      The 2 most common reasons for a mame rom not working are:

      1. MAME has several "rom sets" that are compatible with different versions of MAME. Probably your rom is incompatible with this version of MAME. You can either change the MAME version (involved, also a diff version of MAME won't be compatible with other AGS features, like upcoming high-score tracking) or use a rom set that is compatible.
      2. The ROM has a dependency ROM. Some ROMs depend on other ROMs, so if you don't have the dependency ROM then the one that depends on it won't work. You can look up if your ROM has a dependency here: http://adb.arcadeitalia.net/

      If you'd like to test a ROM and see the full error output to know why it's not working, follow these instructions:

      1. on your keyboard, press the WindowsLogoKey+R
      2. type "cmd" (without quotes) and press ENTER
      3. type "cd AppData\Roaming\polycade\emulators\mame" and press ENTER
      4. type "mame.exe [ROMNAME] -rompath C:\Users[YOURUSERNAME]\AppData\Roaming\polycade\games\arcade" and press ENTER (note that the [ROMNAME] is the filename, without the .zip extension)

      An example of the above command:
      mame.exe asteroid -rompath C:\Users\Julia\AppData\Roaming\polycade\games\arcade
      If your ROM doesn't work, it will output an error message on the command line (probably you are missing some ROM files).

      2 years later
      a year later

      To avoid this in the future why not give the users the option to update their system to the new version. If they pick not to update then give the message that future enhancements may not be available until the system is updated. This could avoid system owners from waking up one morning and nothing works due to incompatibility. Let me say no for now while I search for new roms. And update when I’m ready.

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