Index: src/main/java/org/modeshape/jcr/JcrEngine.java
===================================================================
--- src/main/java/org/modeshape/jcr/JcrEngine.java	(revision 2494)
+++ src/main/java/org/modeshape/jcr/JcrEngine.java	(working copy)
@@ -321,7 +321,10 @@
                 Property valueProperty = optionNode.getProperty(ModeShapeLexicon.VALUE);
                 if (valueProperty == null) continue;
                 Option option = Option.findOption(segment.getName().getLocalName());
-                if (option == null) continue;
+                if (option == null) {
+                    log.warn(JcrI18n.invalidOptionProvided, segment.getName().getLocalName());
+                    continue;
+                }
                 options.put(option, valueProperty.getFirstValue().toString());
             }
         }
Index: src/main/java/org/modeshape/jcr/JcrI18n.java
===================================================================
--- src/main/java/org/modeshape/jcr/JcrI18n.java	(revision 2495)
+++ src/main/java/org/modeshape/jcr/JcrI18n.java	(working copy)
@@ -116,6 +116,7 @@
     public static I18n cannotRemoveNodeFromCloneDueToChangesInSession;
     public static I18n constraintViolatedOnReference;
     public static I18n unableToBindToJndi;
+    public static I18n invalidOptionProvided;
 
     public static I18n cannotRemoveRootNode;
     public static I18n cannotRemoveParentNodeOfTarget;
Index: src/main/resources/org/modeshape/jcr/JcrI18n.properties
===================================================================
--- src/main/resources/org/modeshape/jcr/JcrI18n.properties	(revision 2495)
+++ src/main/resources/org/modeshape/jcr/JcrI18n.properties	(working copy)
@@ -106,6 +106,7 @@
 cannotRemoveNodeFromCloneDueToChangesInSession = The node at "{0}" with UUID "{1}" already exists in the current workspace and would be removed by the clone, but that node has been changed within this session and therefore cannot be removed
 constraintViolatedOnReference = The property "{0}" does not satisfy the constraints defined on the "{1}" property definition
 unableToBindToJndi = Unable to bind repository to JNDI location {0}
+invalidOptionProvided = The provided option {0} is not a valid ModeShape option, it will be ignored
 
 cannotRemoveRootNode = Unable to remove the root node
 cannotRemoveParentNodeOfTarget = The node at "{0}" with UUID "{1}" is a parent of the target node for this operation "{2}"