ASCII encoding on Unicode machine?

Hello, I have an OpenSemanticSearch machine, c.utf_8 encoding.
When I create Hebrew thesaurus, I am getting following error:
’ascii’ codec can’t decode byte 0xd7 in position 160: ordinal not in range(128)
This seems to happen in Django since thesaurus is managed by Django.
The problematic code is:

class IncrementalDecoder(codecs.IncrementalDecoder):
def decode(self, input, final=False):
return codecs.ascii_decode(input, self.errors)[0]

How can I solve the problem or at least remove problematic entries?

There are no IncrementalDecoder classes in django. It doesn’t seem likely that the problem is inside Django itself here. Please file the issue with OpenSemanticSearch.