diff --git a/pyOneNote/FileNode.py b/pyOneNote/FileNode.py
index a5f04d0..1ff3da5 100644
--- a/pyOneNote/FileNode.py
+++ b/pyOneNote/FileNode.py
@@ -2,6 +2,7 @@
 import struct
 from datetime import datetime, timedelta
 import locale
+import math
 
 DEBUG = False
 
@@ -9,6 +10,7 @@
 class FileNodeListHeader:
     def __init__(self, file):
         self.uintMagic, self.FileNodeListID, self.nFragmentSequence = struct.unpack('<8sII', file.read(16))
+        assert self.uintMagic == b'\xc4\xf4\xf7\xf5\xb1zV\xa4'
 
 
 class FileNodeList:
@@ -107,7 +109,7 @@ def __init__(self, file, document):
         self.document= document
         self.file_node_header = FileNodeHeader(file)
         if DEBUG:
-            print(str(file.tell()) + ' ' + self.file_node_header.file_node_type + ' ' + str(self.file_node_header.baseType))
+            print(str(hex(file.tell())) + ' ' + self.file_node_header.file_node_type + ' ' + str(self.file_node_header.baseType))
         self.children = []
         FileNode.count += 1
         if self.file_node_header.file_node_type == "ObjectGroupStartFND":
@@ -178,7 +180,8 @@ def __init__(self, file, document):
 
         current_offset = file.tell()
         if self.file_node_header.baseType == 2:
-            self.children.append(FileNodeList(file, self.document, self.data.ref))
+            if hasattr(self, 'data') and not (self.data.ref.stp == 0 and self.data.ref.cb == 0):
+                self.children.append(FileNodeList(file, self.document, self.data.ref))
         file.seek(current_offset)
 
 
@@ -245,7 +248,7 @@ def isFcrNil(self):
         return res
 
     def __repr__(self):
-        return 'FileChunkReference:(stp:{}, cb:{})'.format(self.stp, self.cb)
+        return 'FileNodeChunkReference:(stp:{}, cb:{})'.format(self.stp, self.cb)
 
 
 class FileChunkReference64x32(FileNodeChunkReference):
@@ -383,7 +386,12 @@ def __init__(self, file, file_node_header):
         self.guidReference = uuid.UUID(bytes_le=self.guidReference)
         current_offset = file.tell()
         file.seek(self.ref.stp)
-        self.fileDataStoreObject = FileDataStoreObject(file, self.ref)
+        try:
+            self.fileDataStoreObject = FileDataStoreObject(file, self.ref)
+        except:  # noqa
+            # print(f'Error for datastore at {hex(current_offset)} // {self.ref.stp}')
+            self.fileDataStoreObject = None
+            pass
         file.seek(current_offset)
 
     def __str__(self):
@@ -638,7 +646,11 @@ def __init__(self, file, OIDs, OSIDs, ContextIDs, document):
                     count, = struct.unpack('<I', file.read(4))
                 self.rgData.append(self.get_compact_ids(ContextIDs, count))
             elif type == 0x10:
-                raise NotImplementedError('ArrayOfPropertyValues is not implement')
+                cproperties, = struct.unpack('<I', file.read(4))
+                prid = PropertyID(file)
+                assert prid.type == 0x11, "prtArrayOfPropertyValues.prid.type out of spec!"
+                for _ in range(cproperties):
+                    self.rgData.append(PropertySet(file, OIDs, OSIDs, ContextIDs, document))
             elif type == 0x11:
                 self.rgData.append(PropertySet(file))
             else:
@@ -683,6 +695,7 @@ def get_properties(self):
                             'offset' in property_name_lower or \
                             'margin' in property_name_lower:
                         size, = struct.unpack('<f', self.rgData[i])
+
                         propertyVal = PropertySet.half_inch_size_to_pixels(size)
                     elif 'langid' in property_name_lower:
                         lcid, =struct.unpack('<H', self.rgData[i])
@@ -712,7 +725,8 @@ def half_inch_size_to_pixels(picture_width, dpi=96):
 
         # Calculate the number of pixels
         pixels = picture_width * pixels_per_half_inch
-
+        if math.isnan(pixels):
+            return 0
         return int(pixels)
 
     [staticmethod]
diff --git a/pyOneNote/OneDocument.py b/pyOneNote/OneDocument.py
index 906a606..1ab3057 100644
--- a/pyOneNote/OneDocument.py
+++ b/pyOneNote/OneDocument.py
@@ -51,13 +51,16 @@ def get_files(self):
             if hasattr(node, "data") and node.data:
                 if isinstance(node.data, FileDataStoreObjectReferenceFND):
                     if not str(node.data.guidReference) in self._files:
-                        self._files[str(node.data.guidReference)] = {"extension": "", "content": "", "identity": ""}
-                    self._files[str(node.data.guidReference)]["content"] = node.data.fileDataStoreObject.FileData
+                        self._files[str(node.data.guidReference)] = {"extension": "", "content": b"", "identity": ""}
+                    try:
+                        self._files[str(node.data.guidReference)]["content"] = node.data.fileDataStoreObject.FileData
+                    except AttributeError:
+                        continue
                 elif isinstance(node.data, ObjectDeclarationFileData3RefCountFND):
                     guid = node.data.FileDataReference.StringData.replace("<ifndf>{", "").replace("}", "")
                     guid = guid.lower()
                     if not guid in self._files:
-                        self._files[guid] = {"extension": "", "content": "", "identity": ""}
+                        self._files[guid] = {"extension": "", "content": b"", "identity": ""}
                     self._files[guid]["extension"] = node.data.Extension.StringData
                     self._files[guid]["identity"] = str(node.data.oid)
         return self._files