diff --git a/external/README.txt b/external/README.txt
index 37a51af..4be1f63 100644
--- a/external/README.txt
+++ b/external/README.txt
@@ -127,5 +127,7 @@ Fin de Partie
 
   >>> exportDir = os.path.join(dataDirectory, 'export')
   >>> for fname in os.listdir(exportDir):
-  ...     os.unlink(os.path.join(exportDir, fname))
+  ...     path = os.path.join(exportDir, fname)
+  ...     if not os.path.isdir(path):
+  ...         os.unlink(path)
 
diff --git a/external/base.py b/external/base.py
index 4effaf3..f271c85 100644
--- a/external/base.py
+++ b/external/base.py
@@ -38,7 +38,8 @@ from cybertools.typology.interfaces import IType
 from loops.common import adapted
 from loops.external.interfaces import ILoader, IExtractor
 from loops.external.element import elementTypes
-from loops.interfaces import IConceptSchema
+from loops.interfaces import IConceptSchema, IResourceSchema
+from loops.resource import Document, MediaAsset
 from loops.setup import SetupManager
 
 
@@ -116,17 +117,18 @@ class Extractor(Base):
     def extractResources(self):
         elementClass = elementTypes['resource']
         for name, obj in self.resources.items():
-            # TODO: handle ``data`` attribute...
-            data = self.getObjectData(obj)
+            data = self.getObjectData(obj, IResourceSchema)
             tp = getName(obj.resourceType)
+            if isinstance(obj, Document):   # backward compatibility
+                tp = 'textdocument'
             element = elementClass(name, obj.title, tp, **data)
             element.processExport(self)
             yield element
 
-    def getObjectData(self, obj):
+    def getObjectData(self, obj, defaultInterface=IConceptSchema):
         aObj = adapted(obj)
         schemaFactory = component.getAdapter(aObj, ISchemaFactory)
-        ti = IType(obj).typeInterface or IConceptSchema
+        ti = IType(obj).typeInterface or defaultInterface
         schema = schemaFactory(ti, manager=self) #, request=self.request)
         instance = IInstance(aObj)
         instance.template = schema
diff --git a/external/element.py b/external/element.py
index bbde812..1ae93d8 100644
--- a/external/element.py
+++ b/external/element.py
@@ -106,11 +106,13 @@ class ResourceElement(Element):
 
     def processExport(self, extractor):
         content = self.pop('data', '')
+        fileFlags = 'wb'
         if (self.get('contentType', '').startswith('text/')
             and isinstance(content, unicode)):
             content = content.encode('UTF-8')
+            fileFlags = 'wt'
         dataPath = os.path.join(extractor.resourceDirectory, self['name'])
-        f = open(dataPath, 'w')
+        f = open(dataPath, fileFlags)
         f.write(content)
         f.close()
 
diff --git a/resource.py b/resource.py
index 5600785..e7fe9d4 100644
--- a/resource.py
+++ b/resource.py
@@ -290,7 +290,8 @@ class Document(Resource):
     def setData(self, data):
         self._data = data.replace('\r', '')
         self._size = len(data)
-    def getData(self): return self._data
+    def getData(self):
+        return self._data
     data = property(getData, setData)
 
 
diff --git a/schema.py b/schema.py
index 4138236..467a262 100644
--- a/schema.py
+++ b/schema.py
@@ -34,6 +34,7 @@ class ResourceSchemaFactory(SchemaFactory):
 
     def __call__(self, interface, **kw):
         schema = super(ResourceSchemaFactory, self).__call__(interface, **kw)
+        #if 'data' in schema.fields.keys():
         schema.fields.data.height = 10
         if self.context.contentType == 'text/html':
             schema.fields.data.fieldType = 'html'
diff --git a/util.py b/util.py
index ae3fad6..fdb3c39 100644
--- a/util.py
+++ b/util.py
@@ -98,12 +98,13 @@ def getUidForObject(obj):
 
 
 def getVarDirectory(request=None):
-    instanceHome = None
+    varDir = None
     if request is not None:
         pub = request.publication
         if pub is not None:
-            instanceHome = os.path.dirname(pub.db.getName())
-    if instanceHome is None:
+            varDir = os.path.dirname(pub.db.getName())
+    if varDir is None:
         instanceHome = os.path.dirname(os.path.dirname(os.path.dirname(
-                        os.path.dirname(cybertools.__file__))))
-    return os.path.join(instanceHome, 'var')
+                                os.path.dirname(cybertools.__file__))))
+        varDir = os.path.join(instanceHome, 'var')
+    return varDir