$170 Pioneer DVR-105 NOT Working With iDVD 2.1 Inside 500 MHz Blue & White G3

[Thubten Kunga]

B&W G3 with 10.2.3 Pioneer DVR-105 as Master with 1999 DVD-RAM as Slave 
on the same optical bus.

I bought a pair of Tin Snips and hacked both into the B&W after cutting 
and bending a lot of metal. Both drives working great. Except 105 can't 
read DVD-RAM written single sided media although my Cube's DVD-ROM 
player reads those same DVD-RAMs just fine. Anyway . . .

iDVD 2.0 works just fine. Ran 2.1 updater and then 2.1 at launch says 
"iDVD could not be opened because the required hardware could not be 
found". Anybody know the work around or does 2.1 require G4 or what?

Someone mentioned about having to reinstall the system but I never ran 
iDVD before on this system. What's the difference between 2.0 and 2.1? 
Do I have to take the DVD-ROM off this bus or what? Is it about the G3 
vs. a G4 or what?

Thanks in advance.

Kunga