Nowhere Patrol (961660)

Compatibility Report

• Name of the game with compatibility issues: Nowhere Patrol
• Steam AppID of the game: 961660

System Information

• GPU: NVIDIA Corporation GeForce GTX 970M/PCIe/SSE2
• Driver/LLVM version: 4.6.0 NVIDIA 418.56
• Kernel version: 4.18.0-20-generic
• Link to full system information report as Gist: https://gist.github.com/pizzapappan/0744c6cf1ba4adc1cd631d92c0781816
• Proton version: 4.11-11

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.

Symptoms

A black game window opens for a fraction of a second before closing and an error prompt 'Game has crashed' pops up also saying that the error has been logged. In the game files a Errors.log file can be found which reads this:

NowherePatrol.exe Information: 0 : 12/30/2019 19:50:14
NowherePatrol.exe Information: 0 : VERSION 1.0.10b
NowherePatrol.exe Error: 0 : Input string was not in a correct format.
NowherePatrol.exe Information: 0 :   at System.Number.ThrowOverflowOrFormatException (System.Boolean overflow, System.String overflowResourceKey) [0x0001a] in <a1336bab325642fd867e87ca7626bada>:0 
  at System.Number.ParseSingle (System.ReadOnlySpan`1[T] value, System.Globalization.NumberStyles styles, System.Globalization.NumberFormatInfo info) [0x00071] in <a1336bab325642fd867e87ca7626bada>:0 
  at System.Single.Parse (System.String s, System.Globalization.NumberStyles style, System.IFormatProvider provider) [0x0001d] in <a1336bab325642fd867e87ca7626bada>:0 
  at NowherePatrol.Entities.Global.SafeParse (System.String input) [0x0000c] in <991221f460e24e7b832237a18e994436>:0 
  at NowherePatrol.Entities.Bullet.parse (System.String[]& block, System.Int32& line) [0x00c51] in <991221f460e24e7b832237a18e994436>:0 
  at NowherePatrol.Entities.Bullet.RunScript (NowherePatrol.Entities.Bullet bu) [0x00175] in <991221f460e24e7b832237a18e994436>:0 
  at NowherePatrol.Entities.Bullet.update () [0x000cf] in <991221f460e24e7b832237a18e994436>:0 
  at NowherePatrol.Engine.World.update (System.Single elapsed) [0x0015a] in <991221f460e24e7b832237a18e994436>:0 
  at NowherePatrol.Scene.update (System.Single elapsed) [0x00403] in <991221f460e24e7b832237a18e994436>:0 
  at NowherePatrol.Game1.update (Microsoft.Xna.Framework.GameTime gameTime) [0x002a8] in <991221f460e24e7b832237a18e994436>:0 
  at NowherePatrol.Game1.Update (Microsoft.Xna.Framework.GameTime gameTime) [0x00085] in <991221f460e24e7b832237a18e994436>:0 
  at Microsoft.Xna.Framework.Game.DoUpdate (Microsoft.Xna.Framework.GameTime gameTime) [0x00019] in <8f8cfc60368e471fb606fa263606a7a9>:0 
  at Microsoft.Xna.Framework.Game.Tick () [0x000eb] in <8f8cfc60368e471fb606fa263606a7a9>:0 
  at Microsoft.Xna.Framework.SdlGamePlatform.RunLoop () [0x00021] in <8f8cfc60368e471fb606fa263606a7a9>:0 
  at Microsoft.Xna.Framework.Game.Run (Microsoft.Xna.Framework.GameRunBehavior runBehavior) [0x00082] in <8f8cfc60368e471fb606fa263606a7a9>:0 
  at Microsoft.Xna.Framework.Game.Run () [0x0000c] in <8f8cfc60368e471fb606fa263606a7a9>:0 
  at NowherePatrol.Program.Main () [0x00020] in <991221f460e24e7b832237a18e994436>:0 

I have spoken to the developer through a post on /r/SteamPlay and he has given a few insights as to why this may be happening. Link is here:
https://www.reddit.com/r/SteamPlay/comments/ehy7w0/proton_service_request_for_nowhere_patrol_on_steam/

Reproduction

1. Run the game using Proton
2. Game crashes and error window pops up

Start by reproducing the crash with Proton 4.11-11 and inspect the game's Errors.log, especially the NowherePatrol.Entities.Global.SafeParse and Bullet.parse stack entries. Compare the failure with the linked developer discussion and available Proton diagnostics; done means identifying a reproducible Proton-side cause and confirming that the game launches without the crash.