crashes on closing

[gudin]

Lately, the app has many times crashed after I click the "Quit" button. This is the first time it has given me an actual error.

util.CannotWriteFileException
1.3.3 2010 07 29 os x
{0 Macintosh HD Users akinnie Library Application Support Slitherine FieldOfGlory engine prefs.ini}
uiplayer.GenericSettings.Save o uiplayer.GenericSettings
uiplayer.s.AncientsUI.PrepareToClose o uiplayer.s.AncientsUI
uiplayer.UIImp.SaveSettingsThenQuit o uiplayer.UIImp
uiplayer.UIImp.blnHandleCommand b o uiplayer.UIImp o uiplayer.Command
uiplayer.Command.Dispatch o uiplayer.Command
uiplayer.Command.Enqueue o uiplayer.Command
uiplayer.Command.ParseAndEnqueue s
uiplayer.htk.TButtonImp.MouseUp o uiplayer.htk.TButtonImp i4i4
uiplayer.htk.TWindowImp.MouseUp o uiplayer.htk.TWindowImp i4i4
uiplayer.htk.GraphicsArea.Event MouseUp o uiplayer.htk.GraphicsArea i4i4
ZN17RuntimeViewWindow13HandleMouseUpEii
ZN16PumpedEventQueue11FilterEventEP11EventRecord
Z36PumpedEventQueueInternalHandleEventsv
Z28PumpedEventQueueHandleEventsv
Z17UpdateMouseCursorv
Delegate.Invoke
Application. CallFunctionWithExceptionHandling o Application p
Z33CallFunctionWithExceptionHandlingPFvvE
Z8mainloopv
RuntimeRun
REALbasic. RuntimeRun
Main
main