Index: jackrabbit-jcr2spi/src/main/java/org/apache/jackrabbit/jcr2spi/version/VersionManagerImpl.java
===================================================================
--- jackrabbit-jcr2spi/src/main/java/org/apache/jackrabbit/jcr2spi/version/VersionManagerImpl.java	(revision 898387)
+++ jackrabbit-jcr2spi/src/main/java/org/apache/jackrabbit/jcr2spi/version/VersionManagerImpl.java	Wed Jan 13 11:08:59 CET 2010
@@ -71,7 +71,8 @@
     }
 
     public void checkout(NodeState nodeState) throws RepositoryException {
-        checkout(nodeState, null);
+        Operation co = Checkout.create(nodeState, this);
+        workspaceManager.execute(co);
     }
 
     public void checkout(NodeState nodeState, NodeId activityId) throws RepositoryException {