Frank Goossens on "[Plugin: Autoptimize] Does not appear to work at all"

Hi MicahBlu;
AO does a number of checks before kicking in (to ensure nothing gets badly broken);

if either
* wordpress's is_feed() is true
* wordpress's is_admin() is true
* there is no "<html" in the pge source
* there is "<xsl:stylesheet" in the page source

then AO does nothing.

My best guess; your theme's header.php is lacking the opening HTML-tag?

hope this helps,
frank