Error on Windows Gimp 2.8.20+Python?

[dinasset]

Hi,
just detected that the parameter "PF_DIRNAME" let the filter crash in Windows Gimp 2.8.20.
Try the test filter by Maldonado "test-batch-cartoon" (attached) or even "test-batch-invert":
after picking of the directory the filter crashes.
First detection was on "contactsheet" (see thread on Gimp-chat).
Is something missing in the environment? 

  test-batch-cartoon.zip (Size: 1.83 KB / Downloads: 349)

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This is the error log, if it could be helpful

  AppCrash_pythonw.exe_95c04ab415d8c52c5da4167571ded4b647d3c_1c50b2a6_0e1c8b7b.zip (Size: 3.29 KB / Downloads: 334)