Build Go Language Support

I am trying to build the Go language support add-in on Windows 7.

http://komodoide.com/resources/languages/komodo--golang/

It wants to use koext.exe but all I can find is koext.py, and I get errors:

L:\Install_programs\Komodo IDE\komodo-go-master

“F:\Programs\Komodo IDE 8\lib\sdk\bin\koext.py” build -i golib
Traceback (most recent call last):
File “F:\Programs\Komodo IDE 8\lib\sdk\bin\koext.py”, line 25, in
import cmdln
File “F:\Programs\Komodo IDE 8\lib\sdk\pylib\cmdln.py”, line 239
except CmdlnUserError, ex:
^
SyntaxError: invalid syntax

Any ideas on what to try next?

Try it with koext.py and Python 2 (as it looks like your using Python 3).