--- versionedFile/extVersionedFile.py	2008/06/27 17:49:17	1.23
+++ versionedFile/extVersionedFile.py	2008/08/08 16:19:26	1.25
@@ -618,7 +618,7 @@ class extVersionedFileObject(ExtFile):
         """modify any of the objects attributes"""
         for arg in args:
             if hasattr(self, arg):
-                logging.debug("changeObject %s: %s = %s"%(self,arg,args[arg]))
+                logging.debug("changeObject %s: %s=%s"%(repr(self),arg,args[arg]))
                 setattr(self, arg, args[arg])
 
     security.declarePublic('getTitle')
@@ -797,6 +797,8 @@ class extVersionedFile(CatalogAware,Fold
         self.id=id
         self.title=title
         self.lockedBy=lockedBy
+        if self.lockedBy is None:
+            self.lockedBy = ''
         self.author=author
         self.lastVersionNumber=0
         self.lastVersionId=None
@@ -896,6 +898,8 @@ class extVersionedFile(CatalogAware,Fold
     
     def getLockedBy(self):
         """get locked by"""
+        if self.lockedBy is None:
+            self.lockedBy = ''
         return str(self.lockedBy)
     
     def getLastVersionNumber(self):