Help with CR48X5-TE (Mitsumi)

[Gi]

I recently bought a 48X5-TE because I had had great success with a previous Mitsumi model of CD-R/W. This one howver has caused a great headache. I can record to CD/R's no problem, but when trying to write to a CD-R/w it (NERO) will usually come back and say Invalid WriteState. It won't burn to a cd-r/w with any software I've tried however, it works great for a cd-r. It will read a cd-r/w no prob. Help.....
Athlon 1 G @ 1.333, 256 pc133, mitsumi floppy, Geforce2 MX
Again, help...