I d/l’d the latest software from their site when I got mine and it installed with no issue (working fine) into Vista. I’ve got an XP hotplug drive I can swap in this weekend and try installing it there to see what happens. In the meantime, maybe someone will cough up an answer.
Most of what I saw on the 43oh site confirmed there is an issue with f432 and some hardware, but on UNIX. It is not outside the realm of possibility this issue occurs in XP as well. What type of computer do you have (mobo-wise)?