diff --git a/www/admin/class_test.php b/www/admin/class_test.php
index 00b6be5c..d62c2ca6 100644
--- a/www/admin/class_test.php
+++ b/www/admin/class_test.php
@@ -1,11 +1,11 @@
 <?
+	$DEBGU_ALL_OVERRIDE = 0; // set to 1 to debug on live/remote server locations
 	$DEBUG_ALL = 1;
 	$PRINT_ALL = 1;
 	$DB_DEBUG = 1;
 
 	if ($DEBUG_ALL)
 		error_reporting(E_ALL | E_STRICT |  E_ERROR | E_WARNING | E_PARSE | E_COMPILE_ERROR);
-	require('libs/Error.Handling.inc');
 
 	define('USE_DATABASE', true);
 	// sample config
diff --git a/www/admin/header.inc b/www/admin/header.inc
index 22b3a1ac..4f169c4a 100644
--- a/www/admin/header.inc
+++ b/www/admin/header.inc
@@ -91,12 +91,15 @@
 	//------------------------------ page rights ned
 
 	// automatic hide for DEBUG messages on live server
-	if (TARGET == 'live' || TARGET == 'remote')
+	// can be overridden when setting DEBUG_ALL_OVERRIDE on top of the script (for emergency debugging of one page only)
+	if ((TARGET == 'live' || TARGET == 'remote') && !$DEBUG_ALL_OVERRIDE)
 	{
 		$login->debug_output_all = 0;
-		$cms->debug_output_all = 1;
+		$login->echo_output_all = 0;
+		$login->print_output_all = 0;
+		$cms->debug_output_all = 0;
 		$cms->echo_output_all = 0;
-		$cms->print_output_all = 1;
+		$cms->print_output_all = 0;
 	}
 	$cms->DATA['JS_DEBUG'] = DEBUG;
 ?>
diff --git a/www/libs/Class.Basic.inc b/www/libs/Class.Basic.inc
index 700f2af9..b6d4651f 100644
--- a/www/libs/Class.Basic.inc
+++ b/www/libs/Class.Basic.inc
@@ -725,7 +725,7 @@
 			$output = preg_replace_callback("/(href=\")?(\>)?\b($protRegex)([\w\.\-?&=+%#~,;\/]+)\b([\.\-?&=+%#~,;\/]*)(\|([^\||^#]+)(#([^\|]+))?\|)?/", 
 				function ($matches) use ($self)
 				{
-					return $self->create_url($matches[1], $matches[2], $matches[3], $matches[4], $matches[5], $matches[7], $matches[9]);
+					return @$self->create_url($matches[1], $matches[2], $matches[3], $matches[4], $matches[5], $matches[7], $matches[9]);
 				},
 				$output
 			);
@@ -733,7 +733,7 @@
 			$output = preg_replace_callback("/(mailto:)?(\>)?\b([\w\.-]+)@([\w\.\-]+)\.([a-zA-Z]{2,4})\b(\|([^\||^#]+)(#([^\|]+))?\|)?/", 
 				function ($matches) use ($self)
 				{
-					return $self->create_email($matches[1], $matches[2], $matches[3], $matches[4], $matches[5], $matches[7], $matches[9]);
+					return @$self->create_email($matches[1], $matches[2], $matches[3], $matches[4], $matches[5], $matches[7], $matches[9]);
 				}, 
 				$output
 			);
@@ -808,8 +808,11 @@
 		// get the host name without the port as given by the SELF var
 		public function get_host_name()
 		{
-			if ($_SERVER['HTTP_HOST'])
+			$port = '';
+			if ($_SERVER['HTTP_HOST'] && preg_match("/:/", $_SERVER['HTTP_HOST']))
 				list($host_name, $port) = explode(":", $_SERVER['HTTP_HOST']);
+			elseif ($_SERVER['HTTP_HOST'])
+				$host_name = $_SERVER['HTTP_HOST'];
 			else
 				$host_name = 'NA';
 			$this->host_port = $port ? $port : 80;
@@ -1077,6 +1080,7 @@
 		//         xd xh xm xs xms to a timestamp.microtime format
 		public static function StringToTime($timestring)
 		{
+			$timestamp = '';
 			if (preg_match("/(d|h|m|s|ms)/", $timestring))
 			{
 				$timegroups = array (1 => 86400, 3 => 3600, 5 => 60, 7 => 1);
diff --git a/www/libs/Class.DB.IO.inc b/www/libs/Class.DB.IO.inc
index 89f6584d..9f085719 100644
--- a/www/libs/Class.DB.IO.inc
+++ b/www/libs/Class.DB.IO.inc
@@ -652,7 +652,7 @@
 					{
 						// TODO: get primary key from table name
 						list($schema, $table) = $this->_db_return_table($this->query);
-						if (!$this->pk_name_table[$table])
+						if (!array_key_exists($table, $this->pk_name_table) || !$this->pk_name_table[$table])
 						{
 							$this->pk_name_table[$table] = $this->db_functions->_db_primary_key($table, $schema);
 						}
@@ -1321,7 +1321,7 @@
 				return false;
 			}
 			// check if this was already prepared
-			if (!is_array($this->prepare_cursor[$stm_name]))
+			if (!array_key_exists($stm_name, $this->prepare_cursor) || !is_array($this->prepare_cursor[$stm_name]))
 			{
 				// if this is an insert query, check if we can add a return
 				if ($this->_check_query_for_insert($query, true))