Python 2.6 multiprocessing

[SK]

I realize that Python 2.6 is not fully supported, even by the svn
PyInstaller but I'm wondering if anyone has a work-around for my
problem. I am trying to use svn PyInstaller on Windows with Python 2.6
on an app using multiprocessing. I had this working under Python 2.5
(without multiprocessing). I added the freeze_support() call to my
main. When my app kicks off the process I get

myapp.exe: error: no such option: --multiprocessing-fork

Is this a known issue? Any ideas?

Thanks!