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IDE: Restarting Steam IDE launched through the installation directory (not by steam) and changing theme caused exception #16214

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Description

@scott-dunbar

Description

Launch IDE via installation directory in steamapps (not through steam itself) then changing the theme causes an exception on next launch

Steps To Reproduce

  1. install LTS through Steam
  2. Open GM via the steam apps directory (do not launch through steam)
  3. Open preferences
  4. select to change theme
  5. click restart (observe GM does not restart)
  6. open GM again manually
  7. observe Exception message

Which version of GameMaker are you reporting this issue for?

IDE v2026.0.0.16 Runtime v2026.0.0.23

Which operating system(s) are you seeing the problem on?

Windows 10.0.19045.0

Crash call stack

Process.StartWithCreateProcess
System.ComponentModel.Win32Exception (2): An error occurred trying to start process 'F:\SteamLibrary\steamapps\common\GameMaker Studio 2\GameMaker-LTS2026.exe' with working directory 'F:\SteamLibrary\steamapps\common\GameMaker Studio 2'. The system cannot find the file specified.
   at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
   at System.Diagnostics.Process.Start(ProcessStartInfo startInfo)
   at YoYoStudio.IDE.SpawnNewIDE(String[] startArgs)
   at YoYoStudio.IDE.Run()
   at YoYoStudio.IDE.Execute(String[] _args, ipoint startMousePos)

c5e3b3e5-941c-43d3-8380-9af5fe094a3e

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