Win 8 Mumble wont start - missing files

[Wwarp]

Hello, I have reinstalled PR but my mumble seems always not completely installed, any ideas what can I do about it? tahnks.

Error window:
https://prnt.sc/37QvUQt61vW5

Log message:

Project Reality Log File
PRLauncher.exe started at: 2022-05-18T14:41:33

Critical Error: An unhandled exception has occured. Details are as follows:

Systém nem?že nalézt uvedený soubor

Further details can be found in the following file:

C:\Project Reality BF2\mods\pr\bin\PRLauncher.log

Please report this error to the Project Reality Team, and include the log file in your report.

Visit Support Forum

 > System.ComponentModel.Win32Exception (0x80004005): Systém nem?že nalézt uvedený soubor
   v System.Diagnostics.Process.StartWithShellExecuteEx(ProcessStartInfo startInfo)
   v PRLauncher.WPF.ViewModel.OptionsWindowViewModel.c.a()
   v System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   v System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   v System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   v System.Threading.ThreadHelper.ThreadStart()