FC6 Respin Install Error

[Tom Stage]

Hi All

I keep getting the following error when i try to use the respin of FC6 i just created with
the latest Pungi for FC6 :

Running anaconda, the FC6 System installer - please wait...
Traceback (most recent call last):
    File "/usr/bin/anaconda", line 588, in ?
        import signal, traceback, string, isys, iutil, time
    File "/usr/lib/anaconda/isys.py", line 32, in ?
        import block
ImportError: No module named block
install exited abnormally [1/1]

> From i can see from the build process there was no errors, so my big
> question is why do i keep getting this, or rather what am i missing ?? 
Cheers
Tom Stage