Unhandled exception when launching the application about steamdesktopauthenticator

[Top-Cat]

A quick trip to google suggests you're lacking the latest .NET framework (4.5)

[geel9]

Try installing .NET 4.5.2

[Rakshaza]

Thanks, it works now:>

[EvgenKo423]

Windows 7 x64. I am also getting an "Unhandled exception" when just launching an app:

************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
   at Steam_Desktop_Authenticator.MainForm.loadAccountsList()
   at Steam_Desktop_Authenticator.MainForm.MainForm_Shown(Object sender, EventArgs e)
   at System.Windows.Forms.Form.OnShown(EventArgs e)
   at System.Windows.Forms.Form.CallShownEvent()
   at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)
   at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
   at System.Threading.ExecutionContext.runTryCode(Object userData)
   at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)
   at System.Windows.Forms.Control.InvokeMarshaledCallbacks()

I am having a .NET 4.0, but the error is not the same as Rakshaza's.
BTW, do you really use something from the .NET 4.5?? If not you'd better use the lowest .NET version possible to not cause such problems to other people.

EDIT: Ok, after clicking "Continue" I've got the same error as Rakshaza. Again, please use the lowest version possible!