Can someone HELP?

[Wallymeister]

If anyone can tell what is causing my problem I would be grateful.

First, I bought PLEXTOR PX-708A some time ago from MTU. My intention was to install this drive in a rackmount computer I wanted to build. Well I finally got around to building it. Installed hardware from computer I was using already (Dell Dimension 4600) for MTU softwares (Hoster, Microstudio, Keyrite, Vogone) rackmount case. Since I installed, Plextor drive works fine with Hoster but when I try to use it with Microstudio it doesn't work. Locks up computer when trying to read a disc. Also, when I try to read disc a disc with Windows Explorer it shows no files on disc. (Doesn't Lock Up though).

I am using....
Hoster 3.108
Microstudio 2.611
Windows XP 5.1(Build 2600.xpsp-sp2-gdr.050301-1519: Service Pack 2)

This just doesn't make any sense to me
Any help is grately appreciated
Wallymeister