not export to the format of 'SK'

[max]

Cairo initialized!
Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/sk1/app/UI/command.py", line 49, in Invoke
    apply(self.get_method(self.command), self.args + args)
  File "/usr/lib/python2.5/site-packages/sk1/app/UI/mainwindow.py", line 690, in SaveToFileInteractive
    self.docmanager.SaveDocument(self.document, use_dialog)
  File "/usr/lib/python2.5/site-packages/sk1/app/managers/docmanager.py", line 138, in SaveDocument
    dlg.RunDialog(self.save_callback, document, filename, fileformat, compressed, compressed_file)
  File "/usr/lib/python2.5/site-packages/sk1/app/UI/dialogs/progressdialog.py", line 50, in RunDialog
    result=callback(arg)
  File "/usr/lib/python2.5/site-packages/sk1/app/managers/docmanager.py", line 143, in save_callback
    self.SaveToFile(arg[0],arg[1],arg[2],arg[3],arg[4])
  File "/usr/lib/python2.5/site-packages/sk1/app/managers/docmanager.py", line 322, in SaveToFile
    saver(document, sysname)
  File "/usr/lib/python2.5/site-packages/sk1/app/plugins/plugins.py", line 201, in __call__
    module.save(document, file, filename, options)
  File "/usr/lib/python2.5/site-packages/sk1/app/plugins/Filters/sksaver.py", line 614, in save
    document.SaveToFile(saver)
  File "/usr/lib/python2.5/site-packages/sk1/app/Graphics/document.py", line 312, in SaveToFile
    file.Page()
AttributeError: SKSaver instance has no attribute 'Page'