  The cosmic-ray propagation code GALPROP has been generalized to include
fragmentation networks of arbitrary complexity. The code can now provide an
alternative to leaky-box calculations for full isotopic abundance calculations
and has the advantage of including the spatial dimension which is essential for
radioactive nuclei. Preliminary predictions for sub-Fe/Fe, 10Be/9Be, 26Al/27Al,
36Cl/Cl, and 54Mn/Mn are presented in anticipation of new experimental isotopic
data.
