cfg.zopehome is no longer part of the default configuration.

src/OFS/ObjectManager.py

@@ -618,7 +618,7 @@ class ObjectManager(CopyContainer,
             raise BadRequest, 'Invalid file name %s' % escape(file)
 
         cfg = getConfiguration()
-        for impath in (cfg.instancehome, cfg.zopehome):
+        for impath in (cfg.instancehome, getattr(cfg, 'zopehome', '')):
             filepath = os.path.join(impath, 'import', file)
             if os.path.exists(filepath):
                 break