pageshell.php updates not making it to browser

hey all,

i have just edited the pageshell.php file at: views/default/pageshells

for the purpose of adding a set of sharing buttons to every page.. however, the updated code is not being displayed in the rendered webpages.

i changed one of the comments on the page too, just to see if it was some aspect of the elgg code structure that i don't understand that is the issue.. but the code comment doesn't render in the source for the pages when viewed in a browser either..

so then i thought it must be a caching issue.. 

cleared the browser cache.

checked that both elgg chaches are disabled - they are..

still nothing.

anyone got any idea of what i am missing?

(I searched the whole elgg installation folder for other files called 'pageshell.php' but none of them contain the relevant code other than the one i edited and mentioned above).

thanks