The installer runs silent through - everything seems to be ok. However on the first start-up Autodesk wants to let us deployment guys to run Inventor (ACAD works fine) with administrative privileges - they even state it on there support site:-(
The user gets an error that Inventor has not been correctly registered and needs to be re-registered.
It seems like Autodesk doesn't integrate the SP1 correctly.
Please check the following RegKeys:
When an Admin runs Inventor for the first time they change:
LastVersionRun: 15.0.1 (was 15.0.0)
UBI: 08f51f74 (was something different)
Add these new Reg values to your deployment and every user can successfully start Inventor without any Admin rights :-)