pyc compile error

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Hi
not enough information online - so i ask it here.
the issue:
i have a .py script that run fine on gimp.
when trying to compile it with "-m compileall" - i get an error:
#########################################
Error processing line 3 of c:\Program Files\GIMP 2\Python\lib\site-packages\pygtk.pth:

  Traceback (most recent call last):
    File "c:\Program Files\GIMP 2\Python\lib\site.py", line 152, in addpackage
      exec line
    File "<string>", line 1, in <module>
  ImportError: No module named runtime

Remainder of file ignored
Compiling myscript.py ...
#################################

the compile produce a .pyc file, but when gimp trying to load it - it crash with similar error or 
"runtime" module missing... 

I was trying to compile other gimp python scripts  - with same result.
i remember that in ubuntu i tried it once , few months ago, and it was fine.

can someone help with this issue?