Index: wp-admin/includes/class-wp-theme-install-list-table.php
===================================================================
--- wp-admin/includes/class-wp-theme-install-list-table.php	(revision 23244)
+++ wp-admin/includes/class-wp-theme-install-list-table.php	(working copy)
@@ -380,7 +380,8 @@
 		$status = 'install';
 
 		$installed_theme = wp_get_theme( $theme->slug );
-		if ( $installed_theme->exists() ) {
+
+		if ( $installed_theme->exists() && glob( $installed_theme->theme_root . '/' . $installed_theme->stylesheet . '/*' ) ) {
 			if ( version_compare( $installed_theme->get('Version'), $theme->version, '=' ) )
 				$status = 'latest_installed';
 			elseif ( version_compare( $installed_theme->get('Version'), $theme->version, '>' ) )