Small fixes

Dotnet/AppApi/Folders.cs

@@ -157,6 +157,7 @@ namespace VRCX
         /// <param name="isFolder">Whether the specified path is a folder or not. Defaults to false.</param>
         public void OpenFolderAndSelectItem(string path, bool isFolder = false)
         {
+            path = Path.GetFullPath(path);
             // I don't think it's quite meant for it, but SHOpenFolderAndSelectItems can open folders by passing the folder path as the item to select, as a child to itself, somehow. So we'll check to see if 'path' is a folder as well.
             if (!File.Exists(path) && !Directory.Exists(path))
                 return;

Dotnet/IPC/IPCClient.cs

@@ -84,8 +84,8 @@ namespace VRCX
                     {
                         if (string.IsNullOrEmpty(packet))
                             continue;
-
-                        MainForm.Instance.Browser.ExecuteScriptAsync("$app.ipcEvent", packet);
+                        if (MainForm.Instance?.Browser != null && !MainForm.Instance.Browser.IsLoading && MainForm.Instance.Browser.CanExecuteJavascriptInMainFrame)
+                            MainForm.Instance.Browser.ExecuteScriptAsync("$app.ipcEvent", packet);
                     }
 
                     _currentPacket = string.Empty;