New Scene Editor Error, need help to sove it

When saving a scene with an Actor and an animation loaded.

Error: 2
TypeError Exception in Tk callback
Function: <bound method myLevelEditor.saveAsScene of <main.myLevelEditor instance at 0x05427E18>> (type: <type ‘instancemethod’>)
Args: ()
Traceback (innermost last):
File “E:\WG\panda3D1\Pmw\Pmw_1_2\lib\”, line 1747, in call
return apply(self.func, args)
File “E:\WG\Panda3D1\SceneEditor\”, line 956, in saveAsScene
File “E:\WG\Panda3D1\SceneEditor\”, line 300, in SaveFile
TypeError: Filename::resolve_filename() argument 1 must be DSearchPath, not ConfigVariableSearchPath