diff --git a/pdf.js b/pdf.js
index 0b810a3ee..9a0b0977a 100644
--- a/pdf.js
+++ b/pdf.js
@@ -2415,7 +2415,7 @@ var Lexer = (function() {
   }
 
   constructor.isSpace = function(ch) {
-    return ch == ' ' || ch == '\t' || ch == '\x0d';
+    return ch == ' ' || ch == '\t' || ch == '\x0d' || ch == '\x0a';
   };
 
   // A '1' in this array means the character is white space.  A '1' or
@@ -3094,10 +3094,11 @@ var XRef = (function() {
       // check for 'XRefStm' key
       if (IsInt(obj = dict.get('XRefStm'))) {
         var pos = obj;
-        if (pos in this.xrefstms)
-          error('Invalid XRef table');
-        this.xrefstms[pos] = 1; // avoid infinite recursion
-        this.readXRef(pos);
+        // ignore previously loaded xref streams (possible infinite recursion)
+        if (!(pos in this.xrefstms)) {
+          this.xrefstms[pos] = 1;
+          this.readXRef(pos);
+        }
       }
 
       return dict;
@@ -4184,7 +4185,7 @@ var PartialEvaluator = (function() {
                 if (typeNum == 1) {
                   patternName.code = this.evaluate(pattern, xref,
                                                    dict.get('Resources'),
-                                                   fonts);
+                                                   fonts, images);
                 }
               }
             }
@@ -4324,14 +4325,16 @@ var PartialEvaluator = (function() {
             baseEncoding = Encodings[baseName.name].slice();
 
           // Load the differences between the base and original
-          var diffEncoding = encoding.get('Differences');
-          var index = 0;
-          for (var j = 0; j < diffEncoding.length; j++) {
-            var data = diffEncoding[j];
-            if (IsNum(data))
-              index = data;
-            else
-              differences[index++] = data.name;
+          if (encoding.has('Differences')) {
+            var diffEncoding = encoding.get('Differences');
+            var index = 0;
+            for (var j = 0; j < diffEncoding.length; j++) {
+              var data = diffEncoding[j];
+              if (IsNum(data))
+                index = data;
+              else
+                differences[index++] = data.name;
+            }
           }
         } else if (IsName(encoding)) {
           baseEncoding = Encodings[encoding.name].slice();
diff --git a/test/pdfs/f1040.pdf.link b/test/pdfs/f1040.pdf.link
new file mode 100644
index 000000000..a3299fc54
--- /dev/null
+++ b/test/pdfs/f1040.pdf.link
@@ -0,0 +1 @@
+http://www.irs.gov/pub/irs-pdf/f1040.pdf
diff --git a/test/pdfs/txt2pdf.pdf.link b/test/pdfs/txt2pdf.pdf.link
new file mode 100644
index 000000000..09653f39c
--- /dev/null
+++ b/test/pdfs/txt2pdf.pdf.link
@@ -0,0 +1 @@
+http://www.sanface.com/pdf/test.pdf
diff --git a/test/test_manifest.json b/test/test_manifest.json
index 44955eefa..edf13b7c5 100644
--- a/test/test_manifest.json
+++ b/test/test_manifest.json
@@ -133,5 +133,17 @@
        "link": true,
        "rounds": 1,
        "type": "load"
+    },
+    {  "id": "txt2pdf",
+       "file": "pdfs/txt2pdf.pdf",
+       "link": true,
+       "rounds": 1,
+       "type": "load"
+    },
+    {  "id": "f1040",
+       "file": "pdfs/f1040.pdf",
+       "link": true,
+       "rounds": 1,
+       "type": "load"
     }
 ]
diff --git a/web/viewer.css b/web/viewer.css
index d1f725a02..cda191a76 100644
--- a/web/viewer.css
+++ b/web/viewer.css
@@ -271,3 +271,8 @@ canvas {
     page-break-after: always;
   }
 }
+
+#loading {
+	margin: 100px 0;
+	text-align: center;
+}
diff --git a/web/viewer.html b/web/viewer.html
index 00950a44c..e22cacbf6 100644
--- a/web/viewer.html
+++ b/web/viewer.html
@@ -90,7 +90,8 @@
         </div>
      </div>
     </div>
-
+    
+    <div id="loading">Loading... 0%</div>
     <div id="viewer"></div>
   </body>
 </html>
diff --git a/web/viewer.js b/web/viewer.js
index 520cf4efa..19f088c59 100644
--- a/web/viewer.js
+++ b/web/viewer.js
@@ -111,12 +111,14 @@ var PDFView = {
     xhr.open('GET', url);
     xhr.mozResponseType = xhr.responseType = 'arraybuffer';
     xhr.expected = (document.URL.indexOf('file:') === 0) ? 0 : 200;
+    xhr.onprogress = PDFView.progressLevel;
 
     xhr.onreadystatechange = function() {
       if (xhr.readyState === 4 && xhr.status === xhr.expected) {
         var data = (xhr.mozResponseArrayBuffer || xhr.mozResponse ||
                     xhr.responseArrayBuffer || xhr.response);
 
+        document.getElementById('loading').style.display = 'none';
         PDFView.load(data, scale);
       }
     };
@@ -124,6 +126,11 @@ var PDFView = {
     xhr.send(null);
   },
 
+  progressLevel: function(evt) {
+    var p = Math.round((evt.loaded / evt.total) * 100);
+    document.getElementById('loading').innerHTML = 'Loading... ' + p + '%';
+  },
+
   navigateTo: function(dest) {
     if (typeof dest === 'string')
       dest = this.destinations[dest];