first simulated datapoint collection... but something wrong in coord trf

deltatau.py

@@ -36,8 +36,10 @@ class Deltatau:
     try:
       self._comm=comm=PPComm(**param)
       self._gather=gather=Gather(comm)
-    except AttributeError as e:
-      _log.critical('can not connect to deltatau')
-      return
+    except BaseException as e:
+      _log.critical(f'can not connect to deltatau:{e}')
+      self._comm=comm=None
+      self._gather=gather=None
+      #return
     verbose=0x00
     self._shapepath=sp=shapepath.ShapePath(comm, gather, verbose, sync_mode=1, sync_flag=3)