Win32 Registry Error on install, Help!

[LadyCrystha]

Full Exception Info: System.MissingMethodException: Method not found: 'Microsoft.Win32.RegistryKey Microsoft.Win32.RegistryKey.CreateSubKey(System.String, Boolean)'.
at OfficialFSOInstaller.Form1.TSOCabExtractor()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()

any solution for this?

 

[Becky with the good hair]

Click on 'Search and Repair'.