sundogak

1) MAME doesn't need to be uninstalled as it doesn't really "install" like normal Windows programs. Anytime you want to update to newest version of MAME go to the mamedev link and download the EXE (which is just a zipped file with unzip executable). Unzip in temp directory then select the whole set and overwrite your existing. MAME install file above does not overwrite any user modified files such as your INI files. However, your issue isn't related to these files so would hold off on this step and try next one first. 2) More than likely you messed up settings in your INI files. For future, always make backups before making any major changes. Attached are "vanilla" default INI files for version 277 for the three main settings files that MAME uses and more than likely are one (or more) of them causing issues with a wrong setting. I would start with the MAME.INI file as most likely one that has issue based on your error. Change your video option back to AUTO and your numscreens to 1. Numscreens is only if have multiple screens and do not need to change that even in multiple monitor setup to force MAME to monitor 1 (see #5 below). Look to see if you made any changes to the OpenGL-Specific OPTIONS as well. See if works. If still having issues then backup your INI files and then use the three attached (rename to remove "vanilla" and place where they were located in your existing setup. See if MAME at least runs. If it does then there is another setting (most likely in your MAME.INI) that is causing issues. Then just process of elimination. Easiest way I find is to use Notepad ++ with the compare plugin so you can open the default MAME file and your version and it will highlight deltas. You can also in future generate default INI settings files by using this command in the MAME directory (make backup of your files first): mame.exe -createconfig mame_vanilla277.iniui_vanilla277.iniplugin_vanilla277.ini 3) If the default MAME INI files don't work then try #1 and see if a MAME install file got corrupted (very unlikely but easy to eliminate as problem). 4) If neither work than likely you have corrupted video drivers or Direct X files and would try reinstalls for those. 5) As to your original intent on forcing MAME to a specific monitor you do that with setting below: Note that Windows isn't always logical on the numbering in multi monitor setups, so you may have to use \\.\DISPLAY2 depending on how the monitors enumerated (and won't always match the number in Display setting).

Altirra's does have a compatibility database function but at least from what I could tell was only for 5200 carts (been awhile so may be wrong). But here are some tools to figure out the header type: There is also this html file for drag and drop of rom to add header but it isn't always 100% (i.e., may show two types and have to figure which one). https://github.com/robinhedwards/UltimateCart/blob/master/RomToCar.html With some google-fu there are also some "car" extension rom packs with headers already applied floating about.

Yes

You cannot force LB to only use ROM named media. As you have seen if there is any other named media via title in addition to rom-named media it will add to game as well. If you have media/image pack with ROM names then easiest is to nuke the media folder specific to MAME and then add your media with ROM name. However, there is still a gotcha as if you ever edit a game in LB, then LB will merrily rename the media back to LB naming convention of game title (via Database) and a -0# sequence. There is a useful plugin in download section to rename media back to ROM name but the reality is you have to battle LB's tendency to name things the way it wants. It would be great if there was some way to lock media overall to avoid this but currently no such feature.

Did you double check to make sure installer installed to same directory (i.e. not one deeper)? Also might try using the Tools, File Management, Restore Backup vs drag/drop to make sure things go where needed.

There is nothing to turn on. My guess is you have the free version of LB.

Fraganator hasn't logged into LB forum since March 2024......

Go to LB menu under Tools, Cloud and toggle off Enable Games Statistics Syncing if don't want it to sync prior install. The pop up shows exactly what is synced one of which is favorites.

Simple answer, not anytime soon. Longer answer:

Backup your LB data xmls (File Management, Create Backup) and then try removing all plugins, remove all Dreamcast games and associated platform (not all of RA just flycast). Then try adding back platform and few games to see if runs. Only thing I can think of is XML is corrupted somewhere (also make sure no Data\Platforms directory has not dupes, zips or other files beyond your platform XMLs). Beyond that a LB person would need to weigh in as out of ideas on this one.

Not really sure what would be to impact one game for version change. I have 13.19, RA flycast and Marvel vs Capcom 2 in CHD format and launches with no issue. These are my settings for RA. I did see some folks with issues if hide console box checked (for other emulators not RA). But I have on and launches. Did you try removing the game and readding it?

Rename the extension either within Notepad or exit Notepad and rename file in Windows Explorer.