Problems installing SCO ODT

[michael squires]

I've been trying to install ODT 1.0 and (once) it worked (but then
I had to modify the installation and decided to re-install from
scratch) and (three or more times) it has not worked.  What happens
is that the install goes without errors but when I boot I get
the message "-: grep not found" instead of the message that the
accounting system is not running and the accounting system eventually
crashes, locking me out.  X does not run either under these conditions (it
did the first time).  It seems to either be (1) a bad set of install 
diskettes or (2) some mistake I'm making when I do a selective install.

Any ideas?