Compatibility Report

• Name of the game with compatibility issues: Sonic the Hedgehog 4 - Episode II
• Steam AppID of the game: 203650

System Information

• GPU: GT 630M
• Driver/LLVM version: nvidia 390.132
• Kernel version: 5.4.0-37-generic
• Link to full system information report as Gist: https://gist.github.com/OSA413/89ab8358af3981f4ad038db6ba17d5f5
• Proton version: 5.0-9

I confirm:

• [X] that I haven't found an existing compatibility report for this game.
• [X] that I have checked whether there are updates for my system available.

steam-203650.log

Symptoms

I can't run run the game because it requires a config file that is usually generated by the Launcher. When I try to save configuration in the Launcher, it crashes with the following exception:

System.Runtime.InteropServices.MarshalDirectiveException: Type System.ArgIterator which is passed to unmanaged code must have a StructLayout attribute.

Reproduction

1. Run the Launcher ("Configure", the second option in the launch dialog)
2. Press "Save settings and launch Sonic 4"