Has anyone successfully installed materials studio 5.5 silently on Windows 7 Enterprise (64-bit)?

When I run the setup.exe with a /S /v/qn or a /v"/qn it fails. Event Viewer gives this error:

Product: Accelrys Materials Studio 5.5 (x64 Server) -- Error 1722.There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor. Action RegisterXPComDSOs, location: C:\Program Files (x86)\Accelrys\Materials Studio 5.5 x64 Server\bin\perl.exe, command: "C:\Program Files (x86)\Accelrys\Materials Studio 5.5 x64 Server\share\Install\Scripts\\RegisterDSOs.pl"

Any ideas?

Thanks,

Aaron