[Mediawiki-l] failed Re: how to upgrade running 1.9 to 1.16 withall the extensions

[Platonides]

Frank Ralf wrote:
>> shall I copy the include directory from the old to the new wiki???
> 
> Yes

Uh? You should only use the include directory coming with your version.
It is the contents of the *extension* directory what you may copy
(although better to check if there's a newer version available).

Also, that error is often produced by having
require_once("extensions/Foo/Foo.php"); instead of
require_once("$IP/extensions/Foo/Foo.php");