Fix a nasty test case which was failing under 3.3.
diff --git a/libcloud/compute/drivers/vcloud.py b/libcloud/compute/drivers/vcloud.py
index e7d9a7e..b258618 100644
--- a/libcloud/compute/drivers/vcloud.py
+++ b/libcloud/compute/drivers/vcloud.py
@@ -31,7 +31,6 @@
 import time
 
 from xml.etree import ElementTree as ET
-from xml.etree.ElementTree import _ElementInterface
 from xml.parsers.expat import ExpatError
 
 from libcloud.common.base import XmlResponse, ConnectionUserAndKey
@@ -588,8 +587,7 @@
                 except Exception:
                     # The vApp was probably removed since the previous vDC query, ignore
                     e = sys.exc_info()[1]
-                    if not (isinstance(e.args[0], _ElementInterface) and
-                            e.args[0].tag.endswith('Error') and
+                    if not (e.args[0].tag.endswith('Error') and
                             e.args[0].get('minorErrorCode') == 'ACCESS_TO_RESOURCE_IS_FORBIDDEN'):
                         raise
 
diff --git a/libcloud/test/compute/test_vcloud.py b/libcloud/test/compute/test_vcloud.py
index 87324bd..aa9cf65 100644
--- a/libcloud/test/compute/test_vcloud.py
+++ b/libcloud/test/compute/test_vcloud.py
@@ -412,7 +412,7 @@
         self.tag = 'Error'
 
     def get(self, foo):
-        return 'ACCESS_TO_RESOURCE_IS_FORBIDDEN'
+        return 'ACCESS_TO_RESOURCE_IS_FORBIDDEN_1'
 
 class AnotherError(Exception):
     pass