add check for cards not supporting studio drivers

EnvyUpdate/MainWindow.xaml.cs

@@ -146,7 +146,31 @@ namespace EnvyUpdate
                 textblockGPUName.Text = Debug.GPUname();
             }
 
-            gpuURL = Util.GetGpuUrl();
+            try
+            {
+                gpuURL = Util.GetGpuUrl();
+            }
+            catch (ArgumentException)
+            {
+                try
+                {
+                    // disable SD and try with GRD
+                    if (File.Exists(GlobalVars.exepath + "sd.envy"))
+                    {
+                        File.Delete(GlobalVars.exepath + "sd.envy");
+                    }
+
+                    gpuURL = Util.GetGpuUrl(); //try again with GRD
+                    MessageBox.Show(Properties.Resources.ui_studionotsupported);
+                    radioGRD.IsChecked = true;
+                }
+                catch (ArgumentException)
+                {
+                    // Now we have a problem.
+                    MessageBox.Show("ERROR: Invalid API response from Nvidia. Please file an issue on GitHub.");
+                    Environment.Exit(10);
+                }
+            }
 
             using (var c = new WebClient())
             {

EnvyUpdate/Properties/Resources.Designer.cs

@@ -222,6 +222,15 @@ namespace EnvyUpdate.Properties {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Studio Driver is not supported by this graphics card..
+        /// </summary>
+        public static string ui_studionotsupported {
+            get {
+                return ResourceManager.GetString("ui_studionotsupported", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Are you sure you want to uninstall EnvyUpdate?.
         /// </summary>

EnvyUpdate/Properties/Resources.de.resx

@@ -171,6 +171,9 @@
   <data name="ui_skipversion" xml:space="preserve">
     <value>Diese Version überspringen</value>
   </data>
+  <data name="ui_studionotsupported" xml:space="preserve">
+    <value>Studio Treiber wird von dieser Grafikkarte nicht unterstützt.</value>
+  </data>
   <data name="uninstall_confirm" xml:space="preserve">
     <value>Sind Sie sich sicher, dass Sie EnvyUpdate deinstallieren wollen?</value>
   </data>

EnvyUpdate/Properties/Resources.resx

@@ -171,6 +171,9 @@
   <data name="ui_skipversion" xml:space="preserve">
     <value>Skip this version</value>
   </data>
+  <data name="ui_studionotsupported" xml:space="preserve">
+    <value>Studio Driver is not supported by this graphics card.</value>
+  </data>
   <data name="uninstall_confirm" xml:space="preserve">
     <value>Are you sure you want to uninstall EnvyUpdate?</value>
   </data>

EnvyUpdate/Util.cs

@@ -394,8 +394,6 @@ namespace EnvyUpdate
 
         public static string GetGpuUrl()
         {
-            //TODO: Make a list of languages and match OS language to driver
-            //int langid;
             int psid;
             int pfid;
             int osid;
@@ -437,6 +435,11 @@ namespace EnvyUpdate
                     //relative url
                     gpuURL = "https://www.nvidia.com/Download/" + gpuURL;
                 }
+                else if (gpuURL.Contains("No certified downloads were found"))
+                {
+                    //configuration not supported
+                    throw new ArgumentException();
+                }
                 else
                 {
                     //panic.