Hello: I just bought a WF 4 student edition and encounter a strange problem during the installation and runing: I used ipconfig/all to find my computer physic IP address and the result was: XXXXX and I used this number to got license file from PTC. During the installation, I found the host ID shown on the pro/e set up screen was: XXXXX. the first two digit didn't match. 02 vs 00. after the installation and when it start to run, I got the error message "invalid host". can anyone give me some help? why pro/e can't find correct Ip address? Thanks for your help. Zetian