open a networkfile in the path including some Chinese characters

Hi,

When I open a networkfile in the path including some Chinese characters. Orange-network report the following info:

Unhandled exception of type TypeError occured at 14:13:55:
Traceback:
File: OWNxFile.py, line 402 in browseNetFile
Code: self.selectNetFile(0)
File: OWNxFile.py, line 152 in selectNetFile
Code: self.openFile(self.recentFiles[0])
File: OWNxFile.py, line 198 in openFile
Code: net = Orange.network.readwrite.read(fn, auto_table=self.auto_table)
File: readwrite.py, line 136 in read
Code: return read_pajek(path, encoding, auto_table=auto_table)
File: readwrite.py, line 243 in read_pajek
Code: input = orangeom.GraphLayout().readPajek(path, project)
TypeError: invalid arguments (a string and optionally a boolean expected)