Have just checked, it probably would if I bought OS 10.4, but am not going to do that (a) because even 10.3 was a move too far, but has some trade-off benefits (b) when I absolutely must I will skip to 10.5 saving another £85

NX 1.3.1 seems OK on 10.3.9 now I have the correct version and there is a free patch for 10.5