Hi All,
Today, I ran into this issue again and it had to do with a roaming user profile. CityEngine was looking for the file esriLicense.config on the P: drive (the user profile on the network), but after authorization, this file was created on the c:\ drive. We used Process Monitor to find out where CityEngine was looking for this file. After moving the file to P: CityEngine worked as expected.
Cheers, Niels