Various copy software won't read source

[gearo]

I have a Ricoh dvd+rw mp5120a on a 2.4ghz P4 512mb asus and an older compaq p3 488mhz with a Yamaha crw2100e burner attached. (both have older cd readers also but should have nothing to do with it)
Both burners are set on auto in the bios and come up as UDMA.
(both cd roms only come up as pio or dma)
Both are set up as Secondary masters. (I've tried swapping the order of master /slave around but didn't help)
I've updated firmware on both burners.
thanks.