From iLoks trouble shooting page:

"Why does the iLok Driver Installer hang at the end of the installation process?
This is a known issue that occurs when the iLok driver installer is run on a system that contains a particular RME Fireface driver. We have contacted RME to identify a permanent solution for their driver's behavior with our installer. You may also contact RME regarding this behavior. (Hide)

To resolve this issue, please complete the following steps:
1.Temporarily rename the "fireface_mme.dll" file found in the "\Windows\system32\" directory to "fireface_mme-temp.dll".
2.Run the iLok driver installer again. There should be no hang when running the installer this time.
3.When the installation successfully completes, rename the "fireface_mme-temp.dll" file back to "fireface_mme.dll"."

Any progress on this?