Extension error on load(new build)

[Terminator3000]

I'm trying to make a Webmin tcz extension and am getting an error preventing further progress.
Building the tcz is fine and included in it is a /usr/local/tce.installed folder with a webmin.sh install script,but on command 'tce-load -i webmin.tcz' (to test) I get the following error.

touch: /usr/local/tce.installed/webmin: Permission denied
webmin.tcz: OK

chown set to root:staff  and chmod to 755.

So its not loading properly.Its my first attempt at making an extension but it should be quite a simple one.

Tips welcome !

[Juanito]

touch: /usr/local/tce.installed/webmin: Permission denied
webmin.tcz: OK

chown set to root:staff  and chmod to 755.

That should be chmod 775, chown root:staff