Import of ROMs for new platform fails

[Heiko Hartmann]

I have Launchbox version 11.9 on Windows 10.
I do the following:

Import -> ROM files (wizard starts)
I select a number of ROM files.
I select a new platform (in my case: Memotech MTX512)
I select an emulator (in my case MAME)
I select ‘copy files into my Launchbox game folder’
Then select the defaults until the MAME options are displayed. I de-select ALL ignore options (nice new button btw!) and de-select the create playlists.
Now, on the wizard page I normally get a final list of the ROMs. However, with version 11.9, the list is empty.

I can complete the wizard and something starts working (and also comes to end), but 0 roms will be imported. The new platform is not created.

[Jason Carr]

Hi Heiko, what version of MAME are you running? This is usually caused by using an invalid MAME emulator.

[Heiko Hartmann]

Hello Jason,

I was using MAMEUI64 v0.224. I now updated to MAMEUI64 v0.228 but it still is the same behavior.
Then I tried Retroarch with mame_libretro and yes, now the import works as expected! However, I didn’t check if the import was correct, because setting up the whole MAME folder structure for Retroarch is a bigger move. I also prefer MAMEUI64 vs all other MAME versions.

Maybe you could check what the issue with MAMEUI64 is? The whole import process worked before with previous versions of Launchbox.