Index: applications/editors/josm/plugins/imagery-xml-bounds/src/org/openstreetmap/josm/plugins/imageryxmlbounds/io/ValidatingImageryReader.java
===================================================================
--- applications/editors/josm/plugins/imagery-xml-bounds/src/org/openstreetmap/josm/plugins/imageryxmlbounds/io/ValidatingImageryReader.java	(revision 30393)
+++ applications/editors/josm/plugins/imagery-xml-bounds/src/org/openstreetmap/josm/plugins/imageryxmlbounds/io/ValidatingImageryReader.java	(revision 30495)
@@ -9,5 +9,5 @@
 import javax.xml.validation.SchemaFactory;
 
-import org.openstreetmap.josm.io.MirroredInputStream;
+import org.openstreetmap.josm.io.CachedFile;
 import org.openstreetmap.josm.io.imagery.ImageryReader;
 import org.openstreetmap.josm.plugins.imageryxmlbounds.XmlBoundsConstants;
@@ -34,5 +34,5 @@
 	public static void validate(String source) throws SAXException, IOException {
         SchemaFactory factory =  SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
-        Schema schema = factory.newSchema(new StreamSource(new MirroredInputStream(XML_SCHEMA)));
+        Schema schema = factory.newSchema(new StreamSource(new CachedFile(XML_SCHEMA).getInputStream()));
         schema.newValidator().validate(new StreamSource(source));
 	}