I am having the same problem that intruder1960 is having.
C:\mobdic project>c:\python27\python.exe tab2opf.py csw.txt
Traceback (most recent call last):
File "tab2opf.py", line 240, in <module>
dt, dd = r.split('\t',1)
ValueError: need more than 1 value to unpack
Please help. I am trying to create a custom English-English dictionary. Thanks.