diff --git a/plugins/org.eclipse.wst.common.emf/META-INF/MANIFEST.MF b/plugins/org.eclipse.wst.common.emf/META-INF/MANIFEST.MF
index c4114ac..ab40677 100644
--- a/plugins/org.eclipse.wst.common.emf/META-INF/MANIFEST.MF
+++ b/plugins/org.eclipse.wst.common.emf/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.wst.common.emf; singleton:=true
-Bundle-Version: 1.2.400.qualifier
+Bundle-Version: 1.2.500.qualifier
 Bundle-Activator: org.eclipse.wst.common.internal.emf.plugin.EcoreUtilitiesPlugin
 Bundle-Vendor: %pluginProvider
 Bundle-Localization: plugin
diff --git a/plugins/org.eclipse.wst.common.emf/pom.xml b/plugins/org.eclipse.wst.common.emf/pom.xml
index 4070812..000f792 100644
--- a/plugins/org.eclipse.wst.common.emf/pom.xml
+++ b/plugins/org.eclipse.wst.common.emf/pom.xml
@@ -22,6 +22,6 @@
 
   <groupId>org.eclipse.webtools.common</groupId>
   <artifactId>org.eclipse.wst.common.emf</artifactId>
-  <version>1.2.400-SNAPSHOT</version>
+  <version>1.2.500-SNAPSHOT</version>
   <packaging>eclipse-plugin</packaging>
 </project>
diff --git a/plugins/org.eclipse.wst.common.emf/wtpemf/org/eclipse/wst/common/internal/emf/utilities/ResourceIsLoadingAdapter.java b/plugins/org.eclipse.wst.common.emf/wtpemf/org/eclipse/wst/common/internal/emf/utilities/ResourceIsLoadingAdapter.java
index a5d96ea..5f7edc8 100644
--- a/plugins/org.eclipse.wst.common.emf/wtpemf/org/eclipse/wst/common/internal/emf/utilities/ResourceIsLoadingAdapter.java
+++ b/plugins/org.eclipse.wst.common.emf/wtpemf/org/eclipse/wst/common/internal/emf/utilities/ResourceIsLoadingAdapter.java
@@ -13,11 +13,13 @@
  */
 package org.eclipse.wst.common.internal.emf.utilities;
 
+import java.util.ArrayList;
 import java.util.List;
 
 import org.eclipse.emf.common.notify.Adapter;
 import org.eclipse.emf.common.notify.Notification;
 import org.eclipse.emf.common.notify.impl.AdapterImpl;
+import org.eclipse.emf.common.util.EList;
 import org.eclipse.emf.ecore.resource.Resource;
 
 /**
@@ -40,8 +42,10 @@
          * removeIsLoadingSupport() will coordinate with this 
          * synchronization.
          */
-        synchronized(aResource.eAdapters()) {
-        	adapter = (ResourceIsLoadingAdapter) getAdapter(aResource.eAdapters(), ResourceIsLoadingAdapter.class);
+        EList<Adapter> resourceAdapters = aResource.eAdapters();
+		synchronized(resourceAdapters) {
+			ArrayList<Adapter> resourceAdaptersCopy = new ArrayList<Adapter>(resourceAdapters);
+        	adapter = (ResourceIsLoadingAdapter) getAdapter(resourceAdaptersCopy, ResourceIsLoadingAdapter.class);
         }
         
         return adapter;