Make sure base data exists before starting conversion.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@13776 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5OOo/Document/OOoDocument.py

@@ -224,6 +224,8 @@ class OOoDocument(File, ConversionCacheMixin):
     """
       Communicates with server to convert a file 
     """
+    if not self.hasBaseData():
+      self.convertToBaseFormat()
     if format == 'text-content':
       # Extract text from the ODF file
       cs = cStringIO.StringIO()