In the makefile you need 2 backslashes:CPPSRCS = (here)
nsSimple.cpp
nsSimpleModule.cpp (here)
$(NULL)

Several Cut and paste errors here->
Finally, implement the Write and Change methods by using printf to write the
value of mName to stdout and set a new value to mName. Example 8-13 shows the
C++ source code in its entirety. Example 8-13 nsSimple.cpp

Its not clear if you do this throw because its needed or as an option:
throw Components.results.NS_ERROR_FACTORY_REGISTER_AGAIN

Yea, the Makefile problem should be fixed now.

Still need to look at the other issues posted here.

--pete

FIXED