diff --git a/blog.php b/blog.php
index db2896d..fb6693a 100644
--- a/blog.php
+++ b/blog.php
@@ -21,33 +21,9 @@ Template Name: Blog
 			
 		}
 		comicpress_pagination();
-	} else { ?>
-	<div id="dualcolumns">
-		<div class="column_one">
-			<div class="column_one_header"></div>
-	<?php $blog_query = 'showposts='.$blog_postcount.'&cat="-'.exclude_comic_categories().'"&author='.$author_column_one.'&paged='.$paged; 
-	$posts = query_posts($blog_query);
-	if (have_posts()) {
-		while (have_posts()) : the_post();
-			display_blog_post();	
-		endwhile;
-			} ?>
-			<span class="viewpostsbyone">View all posts by: <?php the_author_posts_link(); ?><span><br />
-		</div>
-		<div class="column_two">
-			<div class="column_two_header"></div>
-	<?php $blog_query = 'showposts='.$blog_postcount.'&cat="-'.exclude_comic_categories().'"&author='.$author_column_two; 
-	$posts = query_posts($blog_query);
-	if (have_posts()) {
-		while (have_posts()) : the_post();
-			display_blog_post();	
-		endwhile;
-			} ?>
-			<span class="viewpostsbytwo">View all posts by: <?php the_author_posts_link(); ?></span><br />
-		</div>
-		<div class="clear"></div>
-	</div>
-	<?php } ?>
+	} else {
+    include('partials/dual-columns.inc');
+	} ?>
 <?php get_sidebar('underblog'); ?>
 
 <?php include(get_template_directory() . '/layout-foot.php'); ?>
diff --git a/index.php b/index.php
index 846aeef..e465eb8 100644
--- a/index.php
+++ b/index.php
@@ -91,33 +91,9 @@ if ($disable_comic_frontpage != 'yes' && $disable_comic_blog_frontpage != 'yes'
 			<div class="blogindex-foot"></div>
 			<?php }
 			comicpress_pagination();
-	} else { ?>
-	<div id="dualcolumns">
-		<div class="column_one">
-			<div class="column_one_header"></div>
-			<?php $blog_query = 'showposts='.$blog_postcount.'&cat="-'.exclude_comic_categories().'"&author='.$author_column_one.'&paged='.$paged; 
-			$posts = query_posts($blog_query);
-			if (have_posts()) {
-				while (have_posts()) : the_post();
-					display_blog_post();	
-				endwhile;
-			} ?>
-			<span class="viewpostsbyone">View all posts by: <?php the_author_posts_link(); ?><span><br />
-		</div>
-		<div class="column_two">
-			<div class="column_two_header"></div>
-			<?php $blog_query = 'showposts='.$blog_postcount.'&cat="-'.exclude_comic_categories().'"&author='.$author_column_two; 
-			$posts = query_posts($blog_query);
-			if (have_posts()) {
-				while (have_posts()) : the_post();
-					display_blog_post();	
-				endwhile;
-			} ?>
-			<span class="viewpostsbytwo">View all posts by: <?php the_author_posts_link(); ?></span><br />
-		</div>
-		<div class="clear"></div>
-	</div>
-		<?php } 
+	} else {
+    include('partials/dual-columns.inc');
+  }
 } ?>
 
 <?php get_sidebar('underblog'); ?>
diff --git a/partials/dual-columns.inc b/partials/dual-columns.inc
new file mode 100644
index 0000000..eb44acc
--- /dev/null
+++ b/partials/dual-columns.inc
@@ -0,0 +1,25 @@
+<div id="dualcolumns">
+  <div class="column_one">
+    <div class="column_one_header"></div>
+    <?php $blog_query = 'showposts='.$blog_postcount.'&cat="-'.exclude_comic_categories().'"&author='.$author_column_one.'&paged='.$paged;
+    $posts = query_posts($blog_query);
+    if (have_posts()) {
+      while (have_posts()) : the_post();
+        display_blog_post();
+      endwhile;
+    } ?>
+    <span class="viewpostsbyone">View all posts by: <?php the_author_posts_link(); ?><span><br />
+  </div>
+  <div class="column_two">
+    <div class="column_two_header"></div>
+    <?php $blog_query = 'showposts='.$blog_postcount.'&cat="-'.exclude_comic_categories().'"&author='.$author_column_two;
+    $posts = query_posts($blog_query);
+    if (have_posts()) {
+      while (have_posts()) : the_post();
+        display_blog_post();
+      endwhile;
+    } ?>
+    <span class="viewpostsbytwo">View all posts by: <?php the_author_posts_link(); ?></span><br />
+  </div>
+  <div class="clear"></div>
+</div>
diff --git a/test/widgets/GraphicalNavigationTest.php b/test/widgets/GraphicalNavigationTest.php
index c59134b..d3fb4a0 100644
--- a/test/widgets/GraphicalNavigationTest.php
+++ b/test/widgets/GraphicalNavigationTest.php
@@ -79,11 +79,11 @@ class GraphicalNavigationTest extends PHPUnit_Framework_TestCase {
    * @covers WidgetComicPressGraphicalStorylineNavigation::_group_navigation_buttons
    */
   function testGroupNavigationButtons($buttons, $expected_grouping) {
-    _set_filter_expectation('comicpress_navigation_grouping_details', array(
+    _set_filter_expectation('comicpress_navigation_grouping_details', array(array(
       'left' => array('one', 'two', 'three'),
       'center' => true,
       'right' => array('four', 'five', 'six'),
-    ));
+    )));
 
     $this->assertEquals($expected_grouping, $this->w->_group_navigation_buttons($buttons, array()));
   }
diff --git a/widgets/graphical-navigation.php b/widgets/graphical-navigation.php
index 4b05495..65985de 100644
--- a/widgets/graphical-navigation.php
+++ b/widgets/graphical-navigation.php
@@ -179,11 +179,15 @@ class WidgetComicPressGraphicalStorylineNavigation extends WP_Widget {
     $grouping_hash = array();
 
     $default_group = null;
+    var_dump(apply_filters('comicpress_navigation_grouping_details', array()));
     foreach (apply_filters('comicpress_navigation_grouping_details', array()) as $group => $members) {
+      var_dump($members);
       if ($members === true) {
         $default_group = $group;
       } else {
-        foreach ($members as $member) { $grouping_hash[$member] = $group; }
+        if (is_array($members)) {
+          foreach ($members as $member) { $grouping_hash[$member] = $group; }
+        }
       }
     }