r should have been read

da/ct/dasystem.py

@@ -29,7 +29,7 @@ class CtDaSystem(DaSystem):
         import da.tools.io as io
 
         mapfile   = os.path.join(self['datadir'],self['regionsfile'])
-        ncf       = io.CT_CDF(mapfile,'r')
+        ncf       = io.CT_CDF(mapfile,'read')
         self.regionmap = ncf.GetVariable('budget_region')
         dummy     = ncf.close()