diff --git a/ccm-core/src/com/arsdigita/domain/DomainObjectTraversal.java b/ccm-core/src/com/arsdigita/domain/DomainObjectTraversal.java
index 2975504f2..b49ead062 100755
--- a/ccm-core/src/com/arsdigita/domain/DomainObjectTraversal.java
+++ b/ccm-core/src/com/arsdigita/domain/DomainObjectTraversal.java
@@ -114,7 +114,11 @@ public abstract class DomainObjectTraversal {
     public static void registerAdapter(final String type,
                                        final DomainObjectTraversalAdapter adapter,
                                        final String context) {
-        registerAdapter(SessionManager.getMetadataRoot().getObjectType(type),
+        final ObjectType objectType = SessionManager.getMetadataRoot().getObjectType(type);
+        if (objectType == null) {
+            throw new IllegalArgumentException(String.format("Can't find object type '%s'", type));
+        }
+        registerAdapter(objectType,
                         adapter,
                         context);
     }
@@ -127,7 +131,11 @@ public abstract class DomainObjectTraversal {
      */
     public static void unregisterAdapter(final String type,
                                          final String context) {
-        unregisterAdapter(SessionManager.getMetadataRoot().getObjectType(type),
+        final ObjectType objectType = SessionManager.getMetadataRoot().getObjectType(type);
+        if (objectType == null) {
+            throw new IllegalArgumentException(String.format("Can't find object type '%s'", type));
+        }
+        unregisterAdapter(objectType,
                           context);
     }
 
diff --git a/ccm-core/src/log4j.properties b/ccm-core/src/log4j.properties
index 31cf59d5f..052d33f8d 100755
--- a/ccm-core/src/log4j.properties
+++ b/ccm-core/src/log4j.properties
@@ -33,7 +33,7 @@ log4j.logger.com.arsdigita.web.CCMApplicationContextListener=INFO
 
 # For seeing progress of main runtime initialization process
 log4j.logger.com.arsdigita.runtime.CCMResourceManager=INFO
-#log4j.logger.com.arsdigita.runtime.Runtime=INFO
+log4j.logger.com.arsdigita.runtime.Runtime=INFO
 
 log4j.logger.com.arsdigita.bundle.Loader=INFO