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diff --git a/cms/org.argeo.slc.repo/src/org/eclipse/aether/transfer/MetadataTransferException.java b/cms/org.argeo.slc.repo/src/org/eclipse/aether/transfer/MetadataTransferException.java
new file mode 100644
index 000000000..f86b9864e
--- /dev/null
+++ b/cms/org.argeo.slc.repo/src/org/eclipse/aether/transfer/MetadataTransferException.java
@@ -0,0 +1,131 @@
+/*******************************************************************************
+ * Copyright (c) 2010, 2014 Sonatype, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Sonatype, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.aether.transfer;
+
+import org.eclipse.aether.RepositoryException;
+import org.eclipse.aether.metadata.Metadata;
+import org.eclipse.aether.repository.RemoteRepository;
+
+/**
+ * Thrown when metadata could not be uploaded/downloaded to/from a particular remote repository.
+ */
+public class MetadataTransferException
+    extends RepositoryException
+{
+
+    private final transient Metadata metadata;
+
+    private final transient RemoteRepository repository;
+
+    private final boolean fromCache;
+
+    static String getString( String prefix, RemoteRepository repository )
+    {
+        if ( repository == null )
+        {
+            return "";
+        }
+        else
+        {
+            return prefix + repository.getId() + " (" + repository.getUrl() + ")";
+        }
+    }
+
+    /**
+     * Creates a new exception with the specified metadata, repository and detail message.
+     * 
+     * @param metadata The untransferable metadata, may be {@code null}.
+     * @param repository The involved remote repository, may be {@code null}.
+     * @param message The detail message, may be {@code null}.
+     */
+    public MetadataTransferException( Metadata metadata, RemoteRepository repository, String message )
+    {
+        this( metadata, repository, message, false );
+    }
+
+    /**
+     * Creates a new exception with the specified metadata, repository and detail message.
+     * 
+     * @param metadata The untransferable metadata, may be {@code null}.
+     * @param repository The involved remote repository, may be {@code null}.
+     * @param message The detail message, may be {@code null}.
+     * @param fromCache {@code true} if the exception was played back from the error cache, {@code false} if the
+     *            exception actually just occurred.
+     */
+    public MetadataTransferException( Metadata metadata, RemoteRepository repository, String message, boolean fromCache )
+    {
+        super( message );
+        this.metadata = metadata;
+        this.repository = repository;
+        this.fromCache = fromCache;
+    }
+
+    /**
+     * Creates a new exception with the specified metadata, repository and cause.
+     * 
+     * @param metadata The untransferable metadata, may be {@code null}.
+     * @param repository The involved remote repository, may be {@code null}.
+     * @param cause The exception that caused this one, may be {@code null}.
+     */
+    public MetadataTransferException( Metadata metadata, RemoteRepository repository, Throwable cause )
+    {
+        this( metadata, repository, "Could not transfer metadata " + metadata + getString( " from/to ", repository )
+            + getMessage( ": ", cause ), cause );
+    }
+
+    /**
+     * Creates a new exception with the specified metadata, repository, detail message and cause.
+     * 
+     * @param metadata The untransferable metadata, may be {@code null}.
+     * @param repository The involved remote repository, may be {@code null}.
+     * @param message The detail message, may be {@code null}.
+     * @param cause The exception that caused this one, may be {@code null}.
+     */
+    public MetadataTransferException( Metadata metadata, RemoteRepository repository, String message, Throwable cause )
+    {
+        super( message, cause );
+        this.metadata = metadata;
+        this.repository = repository;
+        this.fromCache = false;
+    }
+
+    /**
+     * Gets the metadata that could not be transferred.
+     * 
+     * @return The troublesome metadata or {@code null} if unknown.
+     */
+    public Metadata getMetadata()
+    {
+        return metadata;
+    }
+
+    /**
+     * Gets the remote repository involved in the transfer.
+     * 
+     * @return The involved remote repository or {@code null} if unknown.
+     */
+    public RemoteRepository getRepository()
+    {
+        return repository;
+    }
+
+    /**
+     * Indicates whether this exception actually just occurred or was played back from the error cache.
+     * 
+     * @return {@code true} if the exception was played back from the error cache, {@code false} if the exception
+     *         actually occurred just now.
+     */
+    public boolean isFromCache()
+    {
+        return fromCache;
+    }
+
+}