I keep on getting this error:

System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
at TextAdventures.Quest.EditorControls.WFEditorTree.SetMenuEnabled(String key, Boolean enabled)
at TextAdventures.Quest.Editor.UpdateClipboardButtons()
at TextAdventures.Quest.Editor.ShowEditor(String key)
at TextAdventures.Quest.Editor.ctlTree_SelectionChanged(String key)
at TextAdventures.Quest.EditorControls.WFEditorTree.ChangeSelection(String key)
at TextAdventures.Quest.EditorControls.WFEditorTree.SelectCurrentTreeViewItem()
at TextAdventures.Quest.EditorControls.WFEditorTree.ctlTreeView_AfterSelect(Object sender, TreeViewEventArgs e)
at System.Windows.Forms.TreeView.OnAfterSelect(TreeViewEventArgs e)
at System.Windows.Forms.TreeView.TvnSelected(NMTREEVIEW* nmtv)
at System.Windows.Forms.TreeView.WmNotify(Message& m)
at System.Windows.Forms.TreeView.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Does anyone know how to fix it or if there is a fix coming?

Looks like the error that pops up when your registry entries get corrupted. Try uninstalling and reinstalling?