diff --git a/expert/field.py b/expert/field.py
index 5c52525..d386298 100644
--- a/expert/field.py
+++ b/expert/field.py
@@ -21,6 +21,7 @@ Field definitions for reports.
 """
 
 from cybertools.composer.report.field import Field
+from loops.common import baseObject
 from loops import util
 
 
@@ -39,7 +40,8 @@ class UrlField(Field):
 
     def getDisplayValue(self, row):
         nv = row.parent.context.view.nodeView
-        return dict(title=self.getValue(row), url=nv.getUrlForTarget(row.context))
+        return dict(title=self.getValue(row),
+                    url=nv.getUrlForTarget(baseObject(row.context)))
 
 
 class TargetField(Field):
diff --git a/external/element.py b/external/element.py
index b9eac6d..7ce33fc 100644
--- a/external/element.py
+++ b/external/element.py
@@ -90,10 +90,12 @@ class ConceptElement(Element):
         type = loader.concepts[self['type']]
         kw = dict((k, v) for k, v in self.items()
                          if k not in self.posArgs)
-        # use IInstance adapter (name='editor') for unmarshalling values
-        #self.object = loader.addConcept(self['name'], self['title'], type, **kw)
         self.object = loader.addConcept(self['name'], self['title'], type)
         formState = self.getInstance().applyTemplate(data=kw, ignoreValidation=True)
+        # simple hack for resolving interface definition:
+        pi = self.get('predicateInterface')
+        if pi is not None:
+            adapted(self.object).predicateInterface = resolve(pi)
 
     def getInstance(self, omit=['title']):
         adObject = adapted(self.object)
@@ -126,6 +128,9 @@ class TypeElement(ConceptElement):
                             loader.typeConcept, **kw)
         instance = self.getInstance(omit=['title', 'typeInterface'])
         formState = instance.applyTemplate(data=kw, ignoreValidation=True)
+        if ti:
+            # overwrite type interface, might have been ignored in addConcept
+            adapted(self.object).typeInterface = kw['typeInterface']
 
 
 class ChildElement(Element):
diff --git a/tests/setup.py b/tests/setup.py
index 9bd43bd..77250d3 100644
--- a/tests/setup.py
+++ b/tests/setup.py
@@ -14,6 +14,8 @@ from zope.app.catalog.text import TextIndex
 from zope.app.container.interfaces import IObjectRemovedEvent
 from zope.app.principalannotation import PrincipalAnnotationUtility
 from zope.app.principalannotation.interfaces import IPrincipalAnnotationUtility
+from zope.app.renderer.rest import IReStructuredTextSource,\
+                ReStructuredTextToHTMLRenderer, ReStructuredTextSourceFactory
 from zope.app.security.principalregistry import principalRegistry
 from zope.app.security.interfaces import IAuthentication
 from zope.app.securitypolicy.zopepolicy import ZopeSecurityPolicy
@@ -122,8 +124,13 @@ class TestSite(object):
         component.provideUtility(principalRegistry, IAuthentication)
         component.provideAdapter(session.ClientId)
         component.provideAdapter(session.Session)
-        component.provideUtility(session.RAMSessionDataContainer(), ISessionDataContainer)
+        component.provideUtility(session.RAMSessionDataContainer(),
+                                 ISessionDataContainer)
         component.provideUtility(ClientIdManager())
+        component.provideUtility(ReStructuredTextSourceFactory,
+                                 name='zope.source.rest')
+        component.provideAdapter(ReStructuredTextToHTMLRenderer,
+                                 (IReStructuredTextSource, IBrowserRequest), Interface)
 
         component.provideAdapter(LoopsType)
         component.provideAdapter(ConceptType)