diff --git a/contentscript.js b/contentscript.js
index 63e4fb0..f587824 100644
--- a/contentscript.js
+++ b/contentscript.js
@@ -48,7 +48,7 @@
 
 function checkRdfXmlLicense(data, format) {
   var parser = new DOMParser();
-  doc = parser.parseFromString(data, 'text/xml');
+  var doc = parser.parseFromString(data, 'text/xml');
   try {
     var rdf = $.rdf().load(doc);
     var licenses = rdf
@@ -92,6 +92,7 @@
         }
         if (format != null) {
           peelBackRdf(data, format);
+          console.log("baseURI: " + data.baseURI);
           chrome.runtime.sendMessage({
             method: 'setLicense',
             type: format,
diff --git a/jquery.rdfquery.core-1.0.js b/jquery.rdfquery.core-1.0.js
index 65fff47..ba35eb1 100644
--- a/jquery.rdfquery.core-1.0.js
+++ b/jquery.rdfquery.core-1.0.js
@@ -580,10 +580,10 @@
         this.value = d.value(d.strip ? strip(value) : value);
         return this;
       } else {
-        throw {
-          name: 'InvalidValue',
-          message: value + ' is not a valid ' + datatype + ' value'
-        };
+        this.representation = value;
+        this.datatype = datatype;
+        this.value = value;
+        return this;
       }
     }
   };
@@ -810,7 +810,7 @@
   $.typedValue.valid = function (value, datatype) {
     var d = $.typedValue.types[datatype];
     if (d === undefined) {
-      throw "InvalidDatatype: The datatype " + datatype + " can't be recognised";
+      return false;
     } else {
       value = d.strip ? strip(value) : value;
       if (d.regex.test(value)) {