WinDD Error when opening - logfile could not be opened

[TurboTacho]

Issue had occurred in the last 24 hours.
Error message:
"[Errors occurred]
The logfile 'C:\Program Files (x86)\WinDynamicDesktop\WinDynamicDesktop.exe.log' could not be opened: System.NullReferenceException: Object reference not set to an instance of an object.
at
WinDynamicDesktop.ConfigMigrator.UpdateToVersion4(String jsonText)
at
WinDynamicDesktop.ConfigMigrator.UpdateConfig(String jsonText)
at WinDynamicDesktop.JsonConfig.LoadConfig0
at WinDynamicDesktop.AppContext .. ctor(String[ args)
at WinDynamicDesktop.Program.Main(String[ args)"

Changes made in last 24 hours:

• updated to .NET Desktop Runtime 8.0.20
• Windows 11 update to 26200.6584

• WDD Version: 5.6.1 x64
• OS Version: Windows 11 Pro 26200.6584

Steps to Reproduce:

1. Update to latest build of Windows 11. Update .NET Desktop Runtime to 8.0.20.
2. Set WinDD to autostart at login. Restart PC, error message occurs.

Are you using the Microsoft Store version of WDD?: No

[t1m0thyj]

I think this may be fixed in 0cb9c9e. Could you try the latest build of WDD and see if it resolves the issue? https://github.com/t1m0thyj/WinDynamicDesktop/actions/runs/17564204500

[TurboTacho]

Hello, an update to the issue.

The latest build of WDD seemed to have resolved the issue.

[TurboTacho]

Update on the issue:

When I run it off C:\Users[name]\Download, the application runs as per normal.
However, when I copy it into the default installation directory in Program Files (x86) - the same error occurs.

On a brighter side, when I copy into Program Files - the application runs correctly.

For reference, the error log generated in (x86):

[2025-09-17 01:53:48.046] System.NullReferenceException: Object reference not set to an instance of an object.
   at WinDynamicDesktop.ConfigMigrator.UpdateObsoleteSettings(String jsonText)
   at WinDynamicDesktop.JsonConfig.LoadConfig()
   at WinDynamicDesktop.AppContext..ctor(String[] args)
   at WinDynamicDesktop.Program.Main(String[] args)