Re: Wrong type argument: stringp, 0

[Richard Stallman]

    First GNU Emacs from CVS would not finish

What does it mean for Emacs to "finish", in this context?

                                              because encoded-kb.el could 
    not be found, so I went to make Emacs with a lengthy invocation with a 
    set up long EMACSLOADPATH. The it seems that cus-edit.el was require'd 
    but not found.

Building Emacs should not require cus-edit.
So please try to debug what causes the attempt to load it.
A breakpoint at Fload should catch it; you just have to
use `c NUMBER' to proceed past the previous calls.