Hello, I am having what is probably the same problem as the OP. I install/authorize fine, but when I go to launch the product, I hang at the splash screen. At first I thought that CityEngine had crashed, but I left the software running in the background and it did eventually start up. However, it literally took 15 minutes or more, so it is understandable that other people would believe the product had crashed or was otherwise not operating correctly and would have killed the process.
I am running the very latest version (2012.1 120913R) and have verified that I meet the hardware and software requirements. My license is a CityEngine Advanced Single Use and I am in a corporate environment (behind firewalls, etc.), so I'm wondering if this is the same issue being reported by the other users in this thread.
Technically, I can still use the software once I've waited out the splash screen, but clearly this is not the intended functionality and is quite cumbersome. It sounds like the problem is probably related to the license/authorization process - what do I need to do to resolve this?
Thanks for your help.
M