[wigworld]

Try installing from a local drive instead of a network drive - PT requires a moderately fast hard drive, so installation from a network drive (which I would expect to stream data much more slowly than a local drive) might upset installation - in other words, PTF might abort installation because it detects that the network drive isn't fast enough to stream audio.
I'm not sure about any of the above, but it might explain your difficulties.
Good luck.