Quick-install GUI breaks when Schemas\MessageBox.xaml disappears / Review Selected Changes freezes GUI

[Th3ShadowKitsuneDevil]

Environment: Windows 10 22H2, build 19045, Windows PowerShell 5.1, Win11Debloat 2026.08.24, launched as Administrator.
I'm running Win11Debloat 2026.08.24 on Windows 10 22H2 using the PowerShell quick-install method.
I went through Custom Setup, selected apps/tweaks, reached Deployment Settings, and clicked Review selected changes. The GUI immediately became dimmed/frozen and PowerShell produced a WPF exception.
The log shows:
Get-Content : Cannot find path '...\Temp\Win11Debloat\Schemas\MessageBox.xaml' because it does not exist.
followed by:
TerminatingError(Show-MessageBox): Exception calling ".ctor" with "1" argument(s): "Value cannot be null. Parameter name: s"
I checked %TEMP%\Win11Debloat while the GUI was still running, and the directory contained only the Logs folder — Schemas, Scripts, Config, etc. were gone.
The Win11Debloat session itself had started normally earlier, so the temporary working files were no longer present while the GUI was still active
Reproduction:

1. Launch with the PowerShell quick method as Administrator.
2. Enter Custom Setup.
3. Select apps/tweaks.
4. Continue to Deployment Settings.
5. Click Review selected changes.
6. GUI becomes stuck; the log shows Schemas\MessageBox.xaml can no longer be loaded.
   Would it be possible to prevent cleanup of %TEMP%\Win11Debloat until the GUI process has fully exited, or make Show-MessageBox handle a missing schema gracefully?