Index: wp-admin/ms-edit.php
===================================================================
--- wp-admin/ms-edit.php	(revision 15155)
+++ wp-admin/ms-edit.php	(working copy)
@@ -442,6 +442,7 @@
     	if ( is_array( $_POST['theme'] ) ) {
 			$themes = get_themes();
 			reset( $themes );
+			$allowed_themes = array();
 			foreach ( (array) $themes as $key => $theme ) {
 				if ( $_POST['theme'][ esc_html( $theme['Stylesheet'] ) ] == 'enabled' )
 					$allowed_themes[ esc_html( $theme['Stylesheet'] ) ] = true;
Index: wp-admin/ms-themes.php
===================================================================
--- wp-admin/ms-themes.php	(revision 15155)
+++ wp-admin/ms-themes.php	(working copy)
@@ -70,7 +70,7 @@
 					$disabled = true;
 				}
 				?>
-				<tr valign="top" class="<?php echo $class, $class1; ?>">
+				<tr valign="top" class="<?php echo $class . ' ' . $class1; ?>">
 					<td>
 						<label><input name="theme[<?php echo $theme_key ?>]" type="radio" id="enabled_<?php echo $theme_key ?>" value="enabled" <?php checked( $enabled ) ?> /> <?php _e( 'Yes' ) ?></label>
 						&nbsp;&nbsp;&nbsp;