Fallen_Zen: Please download the version 3.0.22 and try to run the app again, this should hopefully create more info for me in the log file, as I'm trying to trace the problem.
Post log data if you can.
Here is the log file for 3.0.22
1332618116 Log started
1332618116 init started
1332618116 Requesting
https://api.gog.com/en/downloader2/status/beta/
App online: True
1332618117 Init ended
1332618117 Login started
1332618132 Requesting
https://api.gog.com/en/oauth/initialize/?oauth_consumer_key=1f444d14ea8ec776585524a33f6ecc1c413ed4a5&oauth_nonce=3105827&oauth_signature_method=HMAC-SHA1&oauth_timestamp=1332618132&oauth_version=1.0&oauth_signature=3s%2BZBGRCpZ7QFVaPWBLbQiaasRM%3D 1332618132 Requesting
https://api.gog.com/en/oauth/login/?oauth_consumer_key=1f444d14ea8ec776585524a33f6ecc1c413ed4a5&oauth_nonce=940273&oauth_signature_method=HMAC-SHA1&oauth_timestamp=1332618132&oauth_token=81751fccb8b7f0febecc829dc0d30c70741e6c0b&oauth_version=1.0&password=*******&username=sumonetwo%40gmail.com&oauth_signature=b4hw9PfNvyrBGylSOAcohmjG368%3D 1332618132 Requesting
https://api.gog.com/en/oauth/token/?oauth_consumer_key=1f444d14ea8ec776585524a33f6ecc1c413ed4a5&oauth_nonce=5550517&oauth_signature_method=HMAC-SHA1&oauth_timestamp=1332618132&oauth_token=81751fccb8b7f0febecc829dc0d30c70741e6c0b&oauth_verifier=75bfe6b2200c1d2f8845df643f574aaa3251e2d2&oauth_version=1.0&oauth_signature=bATrdYebysuE5tlhfS0L4bMhCdw%3D 1332618132 Login started
1332618132 Requesting
https://api.gog.com/en/downloader2/user/beta/?oauth_consumer_key=1f444d14ea8ec776585524a33f6ecc1c413ed4a5&oauth_nonce=1974132&oauth_signature_method=HMAC-SHA1&oauth_timestamp=1332618132&oauth_token=807d03ba027ccaf75b59c0210e53414d067193b2&oauth_version=1.0&oauth_signature=aVRRolIdy75VXCGyeRtcq4dyDIM%3D UNHADLED ERROR!
Message: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.
Stack trace: at System.Text.StringBuilder.AppendFormat(IFormatProvider provider, String format, Object[] args)
at System.String.Format(IFormatProvider provider, String format, Object[] args)
at GOGCompanionApp.Login.LoginBtn_Click(Object sender, RoutedEventArgs e)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.Controls.Button.OnClick()
at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
at System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
Inner exception:
TargetSite: System.Text.StringBuilder AppendFormat(System.IFormatProvider, System.String, System.Object[])
Data: System.Collections.ListDictionaryInternal