Make sure your Right Mouse Click the setup.exe file and choose "Run as Administrator". In my experience it doesn't install everything correctly unless you do.
I tried that to no avail. I did find out that I can install using the regular setup.exe rather than the setup-schools.exe, it's just a bit more cumbersome.
please confirm that you executed following steps:
1.] you downloaded 4 GB zip file from PTC containing installation medium
2.] you unzipped zip file into new directory (what software did you use for unzipping ?)
3.] you launched setup.exe from directory mentioned in step 2.
We aren't server based, we have stand alone licenses for each machine. What I've found I can do is use the standard setup rather than the setup-schools.exe. It's a bit more cumbersome, but it all works out in the end. I've also installed 3.0 on four other machines without incident, so perhaps there is something glitchy with the particular machine I am using.
if PTC Installation Assistant continually freezes, you can try this trick ... create new administrator account, log in and run installation.