Index: src/reverter/RevertChangesetTask.java
===================================================================
--- src/reverter/RevertChangesetTask.java	(revision 34946)
+++ src/reverter/RevertChangesetTask.java	(working copy)
@@ -24,6 +24,7 @@
 import org.openstreetmap.josm.gui.progress.swing.PleaseWaitProgressMonitor;
 import org.openstreetmap.josm.gui.util.GuiHelper;
 import org.openstreetmap.josm.io.OsmTransferException;
+import org.openstreetmap.josm.tools.JosmRuntimeException;
 import org.openstreetmap.josm.tools.Logging;
 import org.openstreetmap.josm.tools.UserCancelException;
 
@@ -105,6 +106,9 @@
                 Logging.warn("Revert canceled");
                 Logging.trace(e);
                 return;
+            } catch (Exception e) {
+                Logging.error(e);
+            	throw new JosmRuntimeException(e.getCause());
             }
         }
         if (!allcmds.isEmpty()) {