I have just tried to add new manufacturer but got the following error...

Not Acceptable
An appropriate representation of the requested resource /admin/manufacturers.php could not be found on this server.

Apache/1.3.37 Server at groovy-stuff.co.uk Port 80


Also when I try to add a new product category as well....

Not Acceptable
An appropriate representation of the requested resource /admin/categories.php could not be found on this server.

Apache/1.3.37 Server at groovy-stuff.co.uk Port 80

I have just installed a couple of templates from the download section (although not yet running them) but nothing that I can see that is adding or changing anything in the admin section!

I have looked in the public_html/admin folder and the php files are there!!!????

Can anyone throw some light on this?