All games fail with Bad EXE format

All the games that I have tried running (Fallout: New Vegas, Rocket League, Brotato) fail to start, and all fail with ShellExecuteEx failed: Bad EXE format for [PATH_TO_GAME].

Here is the full log with verobse logging on for Fallout: New Vegas

5daeb974a22a435988892319b3a4f476-lastPlay.log2.84KB

Solution

Ok that flatpak just works

Jump to solution

HeroicBotAPP•6/25/25, 11:15 AM

Please follow these instructions on using GE-Proton:

Head to the Wine Manager in Heroic, click the "GE-Proton" tab, and install "GE-Proton-Latest"
Head to the settings for your game(s) (icon on game card in library). In the "Wine Version" dropdown, select "Proton - GE-Proton-latest"
Rename your Wineprefix (path is shown in game settings), e.g. from current-namecurrent-name to current-name_bakcurrent-name_bak. To clarify: Rename the actual folder on your hard drive, do not change the option in the game settings.
Note: This will make game-specific configuration data (e.g. in-game settings or save files) unavailable. If this is an issue, let us know & we'll help you restore them.