commit 91b70760fe738696eb5bc77b9e3a7b023da39dd7
Author: root <root@srv-xen-moodev09.tauntons.ac.uk>
Date:   Fri Aug 7 10:37:18 2009 +0100

    Fixed bug preventing some modules' stylesheets being included

diff --git a/theme/styles.php b/theme/styles.php
index d94dcfc..e1d2f46 100644
--- a/theme/styles.php
+++ b/theme/styles.php

@@ -116,7 +116,7 @@ $files = array();
 // here can be overridden by theme CSS.
 if ($pluginsheets) {
     foreach ($THEME->pluginsheets as $plugintype) {
-        $files += get_sheets_for_plugin_type($plugintype);
+        $files = array_merge($files, get_sheets_for_plugin_type($plugintype));
     }
 }