diff --git a/ext/ext_manager/test.php b/ext/ext_manager/test.php
index 63e04a9c..17b79874 100644
--- a/ext/ext_manager/test.php
+++ b/ext/ext_manager/test.php
@@ -11,6 +11,9 @@ class ExtManagerTest extends SCoreWebTestCase {
 		$this->assert_title("Documentation for Extension Manager");
 		$this->assert_text("view a list of all extensions");
 
+		# test author without email
+		$this->get_page('ext_doc/user');
+
 		$this->log_in_as_admin();
 		$this->get_page('ext_manager');
 		$this->assert_title("Extensions");
diff --git a/ext/ext_manager/theme.php b/ext/ext_manager/theme.php
index 3a8e383c..77be2f32 100644
--- a/ext/ext_manager/theme.php
+++ b/ext/ext_manager/theme.php
@@ -51,6 +51,7 @@ class ExtManagerTheme extends Themelet {
 		$page->add_block(new Block("Extension Manager", $html));
 	}
 
+	/*
 	public function display_blocks(Page $page, $extensions) {
 		$n = 0;
 		$col_1 = "";
@@ -105,6 +106,7 @@ class ExtManagerTheme extends Themelet {
 		$page->add_block(new NavBlock());
 		$page->add_block(new Block("Extension Manager", $html));
 	}
+	*/
 
 	public function display_doc(Page $page, ExtensionInfo $info) {
 		$author = "";