Version 4.3.6

applications/downloads/sources/Category/Category.php

@@ -785,7 +785,10 @@ class _Category extends \IPS\Node\Model implements \IPS\Node\Permissions
 			$this->bitoptions[ $k ] = $values[ 'cbitoptions_' . $k ];
 		}
 		
-		$this->types = implode( ',', $values['ctypes'] );
+		if( isset( $values['ctypes'] ) )
+		{
+			$this->types = implode( ',', $values['ctypes'] );
+		}
 		
 		if ( $values['club_node_name'] )
 		{