error upgrading to firefox 7.0.1_1,1

[Barbara]

I had an error trying to upgrade firefox.
The build ended with the following lines:
gmake[1]: Leaving directory `/usr/ports/www/firefox/work/mozilla-release'
sed: /usr/ports/www/firefox/work/mozilla-release/build/unix/*.pc: No such file 
or directory
/bin/rm /usr/ports/www/firefox/work/mozilla-release/dist/bin/firefox
rm: /usr/ports/www/firefox/work/mozilla-release/dist/bin/firefox: No such file 
or directory
*** Error code 1

Stop in /usr/ports/www/firefox.
*** Error code 1


I grabbed as much as it was possible from the console, and it's available 
here:
http://pastebin.com/rix26U6T

Thanks
Barbara