Ok, I've just done a completely new install on an XP (Sp3) machine. Everything installed first time with no errors an seems to be fine, one thinsg that did occur to me was. Can you access the Magic-Info login screen locally on the machine you installed it on by going to http://locahost:7001/MagicInfo (note that you need the capital letters in MagicInfo otherwise it won't work).
Let me know how you get on.