[horde] Error with latest horde

[Martin Hochreiter]

> Looks like your upgrade went wrong. array_merge_recursive_overwrite() 
> *is* defined in lib/Horde/Array.php.
>
> Jan.
>
Hi Jan,

to be exact: I made a fresh install and copied the formerly used and 
customized config files to the "new" install.
I know that array_merge_recursive_overwrite() is defined in that file, 
and Horde does not complain about
not finding the file within the require_once('Horde/Array.php') and that 
is why I don't have any clue
whats wrong here ...

regards
martin