Index: static/solr/setup.txt
===================================================================
--- static/solr/setup.txt	(revision 29099)
+++ static/solr/setup.txt	(working copy)
@@ -1,4 +1,10 @@
 
+includeLibs {
+  tx_solr_SolrService = EXT:solr/classes/class.tx_solr_solrservice.php
+  tx_solr_Indexer = EXT:solr/classes/class.tx_solr_indexer.php
+  tx_solr_Util = EXT:solr/classes/class.tx_solr_util.php
+}
+
 plugin.tx_solr {
 
 	solr {
Index: classes/class.tx_solr_solrservice.php
===================================================================
--- classes/class.tx_solr_solrservice.php	(revision 29099)
+++ classes/class.tx_solr_solrservice.php	(working copy)
@@ -24,6 +24,10 @@
 
 require_once($GLOBALS['PATH_solr'] . 'lib/SolrPhpClient/Apache/Solr/Service.php');
 
+if(!interface_exists(t3lib_Singleton)) 
+{
+    interface t3lib_Singleton {}
+}
 
 /**
  * Solr Service Access