Installing Encore DVD removes all optical drives from system

Hello,
       Hi i got the official Production Suite Premium, installed whole
production studio, but after restart the DVD RW optical drive gets vanished from
system and not visible even in device manager, as soon I uninstall only Encore
DVD from the Production Suite and restart the machine the optical drive is again
visible and working fine...DVD RW AW-G170A.

I have the same problem.

Xeon dual, x64 OS 3GB.
I had this same problem until the 1.51 update. 1.5 encore install the drives
disappeared. Remove encore and the drives appear again. 1.51 fixed the problem.
Installed encore 2.0,reboot and my DVD drives disappear. Updates to date don't
fix the problem. Device manager sees the drives but with a driver problem -
error of Registery entry corrupted. OF COURSE tried to uninstall/reinstall the
driver but it is on the install CD

Hello,