remove.nonfree weirdness

[Thien-Thi Nguyen]

I did:

$ wget ..../firefox-2.0.0.12-source.tar.bz2
$ tar xjf firefox-2.0.0.12-source.tar.bz2         (1)
$ cvs checkout gnuzilla                           (2)
$ find gnuzilla -mindepth 1 -name CVS -prune \
    -o -type f -printf '%P\n' \
  | while read f ; do ln -vf gnuzilla/$f mozilla/$f ; done
$ cd mozilla
$ ./remove.nonfree                                (3)

(1) results in new dir mozilla/
(2) results in new dir gnuzilla/
(3) runs fine until the end, showing the following error:
cat: calendar/sunbird/app/brand.dtd.in: No such file or directory
./remove.nonfree: line 160: calendar/sunbird/app/brand.dtd.in.new: No such file 
or directory
mv: cannot stat `calendar/sunbird/app/brand.dtd.in.new': No such file or 
directory
cat: calendar/sunbird/app/brand.properties: No such file or directory
./remove.nonfree: line 162: calendar/sunbird/app/brand.properties.new: No such 
file or directory
mv: cannot stat `calendar/sunbird/app/brand.properties.new': No such file or 
directory

As far as i can tell, what i did was not inconsistent w/ the
instructions in README.ICECAT.  Am i missing something here?

thi