[Mediawiki-l] upgrade causing errors (1.2->1.3.1)

[Ashami]

I had to do a manual upgrade. I put in all the relevant info, and 
double-checked accuracy. When I try to run the wiki, I get the 
following errors:

__________
Warning: Invalid argument supplied for foreach() in 
.../includes/User.php on line 90

90		foreach ($wgNamespacesToBeSearchedDefault as $nsnum => $val) {
91			$this->mOptions['searchNs'.$nsnum] = $val;
92		}

Warning: Invalid argument supplied for foreach() in 
.../includes/Setup.php on line 254

254            foreach ( $wgExtensionFunctions as $func ) {
255                   	$func();
256            }

Warning: Cannot modify header information - headers already sent by 
(output started at ...includes/User.php:90) in 
.../includes/OutputPage.php on line 329

327	if( $this->mRedirectCode == '301') {
328				if( !$wgDebugRedirects ) {
329					header("HTTP/1.1 {$this->mRedirectCode} Moved Permanently");
330				}
331				$this->mLastModified = gmdate( "D, j M Y H:i:s" ) . " GMT";
332			}
__________

The Wiki was working just fine before all this. What the hell is going 
on? Thank you for your assisstance.

Ash