Torchlight III (1030210)

Compatibility Report

• Name of the game with compatibility issues: Torchlight III
• Steam AppID of the game: 1030210

System Information

• GPU: GeForce GTX 1060
• Driver/LLVM version: NVIDIA 440.100
• Kernel version: 5.4.0-7634-generic
• Link to full system information report as Gist:
  https://gist.github.com/Nuxmin/b1444316947464568e7c868e3fa05716#file-gistfile1-txt
• Proton version: 5.0-9

I confirm:

• that I haven't found an existing compatibility report for this game.
• that I have checked whether there are updates for my system available.
• that the game worked around 1 month ago and it did not have any issue in order to play.

Proton log:

steam-1030210.log

Symptoms

When you start the game it says:
"No Platform Available"
"Unable to log into the platform. Please make sure that you are running through the correct launcher."

Then the game closes.

Here's a screenshot about the symptom:

Reproduction

Just install the game and play. As soon as the start menu loads it will bring that information.

Start by reproducing Torchlight III (Steam AppID 1030210) with Proton 5.0-9 and review the attached steam-1030210.log alongside the linked system information. The report establishes the launch failure and reproduction steps, but does not identify a code entry point or a specific compatibility change; completion would require determining the cause and documenting or validating a fix.