dxf export exception: "Can't open file" (but file is successfully created)

[3DLIRIOUS]

I am trying to use pymeshlab to slice a mesh with generate_polyline_from_planar_section and exporting the resultant edges in the dxf format.

Sample code using the famous Stanford Bunny as an input model:

ms = pymeshlab.MeshSet()
ms.load_new_mesh('bunny_flat_100mm.ply')
ms.generate_polyline_from_planar_section(planeaxis='Z Axis', planeoffset=30, relativeto='Origin', createsectionsurface=False)
ms.save_current_mesh('slice_030.dxf')

Generates the following exception:

pymeshlab.pmeshlab.PyMeshLabException: Error encountered while exportering file K:/path/to/file/slice_030.dxf:
Can't open file

However, the dxf file is successfully created, so this seems like more of a nuisance than anything. The error also occurs when performing the same steps MeshLab; an error dialog pops up with the same "Can't open file" message, but the file is successfully exported.

Please note that there is also a typo in the error message ("exportering" s/b "exporting").

Thanks for all the great work!