Stencyl won't quit on El Capitan

Hi , I've got the latest beta and it won't quit (neither cmd Q, drop down, or contextual dock option), so I need to force quit each time i finish  work.

Not a show stopper, but irritating.

log attached

Code: [Select]

Caused by: stencyl.sw.app.ExtensionException: stencyl.sw.util.Loader.writeLocalDictionary(Ljava/lang/String;Ljava/util/HashMap;)V
at stencyl.sw.app.App.appClosed(App.java:280)
at stencyl.sw.app.App.appClosing(App.java:241)
at stencyl.thirdparty.misc.MacHandler.quit(MacHandler.java:60)
... 27 more
Caused by: java.lang.NoSuchMethodError: stencyl.sw.util.Loader.writeLocalDictionary(Ljava/lang/String;Ljava/util/HashMap;)V
at ResourcesMonitor.savePreferences(ResourcesMonitor.java:200)
at ResourcesMonitor.onDestroy(ResourcesMonitor.java:146)
at stencyl.sw.app.App.appClosed(App.java:274)
... 29 more
It's a compatibility problem with a toolset extension. Should be fixed in build 8951.