Version 4.3.0

applications/core/modules/setup/install/applications.php

@@ -119,6 +119,9 @@ class _applications extends \IPS\Dispatcher\Controller
 			'getHtml'	=> function( $element ) use ( $apps )
 			{
 				$options = array_combine( array_keys( $apps ), array_map( function( $value ){ return $value['name']; }, $apps ) );
+				/* But put system app at end of list to ensure it's not selected by default over something else */
+				unset( $options['core'] );
+				$options['core'] = $apps['core']['name'];
 				return \IPS\Theme::i()->getTemplate( 'forms' )->select( 'default_app', $element->value, TRUE, $options );
 			},
 			'validate'	=> function( $element ) use ( $apps )