#1 latex error during build

[Katie Bechtold]

I downloaded the tarball after giving up on the
anonymous CVS repository server. Here's where 'make'
leaves me:

(/usr/share/texmf/tex/latex/base/size10.clo))
(/usr/share/texmf/tex/latex/graphics/epsfig.sty
(/usr/share/texmf/tex/latex/graphics/graphicx.sty
(/usr/share/texmf/tex/latex/graphics/keyval.sty)
(/usr/share/texmf/tex/latex/graphics/graphics.sty
(/usr/share/texmf/tex/latex/graphics/trig.sty)
(/usr/share/texmf/tex/latex/graphics/graphics.cfg)
(/usr/share/texmf/tex/latex/graphics/dvips.def))))
(/usr/share/texmf/tex/latex/amsmath/amsmath.sty
For additional information on amsmath, use the `?' option.
(/usr/share/texmf/tex/latex/amsmath/amstext.sty
(/usr/share/texmf/tex/latex/amsmath/amsgen.sty))
(/usr/share/texmf/tex/latex/amsmath/amsbsy.sty)
(/usr/share/texmf/tex/latex/amsmath/amsopn.sty))
(./_formulas.aux) [1] [2]
[3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15]
! Undefined control sequence.
<recently read> \BC

l.51 $\BC
, \rho$
?

Also, the install doc referenced in INSTALL yields a 404.