Did the same thing to my winxp pro as well. Its kind of flaky, itll work sometimes then sometimes it wont. Ive tried it about 10 different times and had a 50% success rate... although it was version 3.0

UPDATE: Well I tried version 4.0 and yet again I am now redoing my WinXP ... so 4.0 is about the same as 3.0 when it comes to crashing my system. Have to wait until version 5.0 hah.

is it much different from the MacOS one by the same guy? i've got that installed without any problems