Yeah its a strange problem ! and a brilliant game to play but very annoying when you finally get to save and then get a RSOD.
I have a V4 and magic 3.1 and my DVD-R Princo works flawlessly
my friend also has a magic 3.1 but he has a V7 and he gets a RSOD using my princo DVD-R
i will try the tray opening trick tomorrow and see how that goes.
i guess the 3.1 will see the door close and wake up and start patching the bios again and say the dvd is ok and the RSOD will not be seen , the 3.0 does not support multidisk and would not see the door close and would not patch the bios so it should not work on any model old or new !