Updater to 8.1.1 kills Plesk

[jaxent]

I am running RH ES 4 release 5. I ran the updater from the latest version of plesk 8.1 to 8.1.1. It killed the system completely. Blank screens. I turned on error logging and got

[Thu May 3 15:46:06 2007] [error] PHP Fatal error: Unsupported operand types in /usr/local/psa/admin/plib/locales/en-US/messages_en-US.php on line 7862

I fixed it by adding

if(is_null($lmsg_arr)){
	$lmsg_arr = array();
}

at line 18, just before

$lmsg_arr += array(