[kh99]

This is caused by a change in the error handling, and was discussed here: http://tracker.vbulletin.com/browse/VBIV-16079 (you have to log in at vbulletin.com first).

The bottom line is that you have to either disable all php logging by setting log_errors to 0 in your php.ini, or else edit file includes/class_core.php and comment out line 5711, so that it looks like this:

if ($php_log_errors)
{
	// If set, try to log to system log regardless of vB settings
	// error_log("VB PHP Error: $errstr in $errfile on line $errline");
}

(added two forward slashes before error_log ).

According to the comments in the tracker, there will be a solution to this in beta 5.