8
Quote:
Warning: ob_start(): output handler 'ob_gzhandler'
cannot be used after 'URL-Rewriter' in file
/include/cp_functions.php line 33
You must be using some kind of URL rewriting hack that cannot be used with gzip compression.
Maybe you didn't see it before because gzip compression was broken in other versions and was always disabled, whatever you had specified in the admin.
Go to preferences/main and disable gzip, that will fix this.
(And notices are notices, not errors...)