Frequency axis shape error - AARTFAAC MS

[shulevski]

I am trying to produce dynamic spectra for two directions from an AARTFAAC-12 data set having 24 channels and duration of 603.98 seconds. This results in:

...
Append MS 0................ 599/600 [================================================= ]  99%  - 0'53"
 - 11:44:29 - AsyncProcessPool          | [comp15] process comp15: exception raised processing job Stack_SingleTime:597: Traceback (most recent call last):
  File "/lofarsoft/DDFacet/DDFacet/Other/AsyncProcessPool.py", line 850, in _dispatch_job
    result = call(*args, **kwargs)
  File "/lofarsoft/DynSpecMS/ClassDynSpecMS.py", line 339, in Stack_SingleTime
    self.Stack_SingleTimeDir(iTime,iDir)
  File "/lofarsoft/DynSpecMS/ClassDynSpecMS.py", line 405, in Stack_SingleTimeDir
    self.DicoGrids["GridLinPol"][iDir,ich0:ich0+nch, iTime, :] = ds
ValueError: could not broadcast input array from shape (24,4) into shape (23,4)
    Append MS 0................ 600/600 [==================================================] 100%  - 0'53"
 - 11:44:29 - AsyncProcessPool          | Append MS 0: 600 jobs complete, average single-core time 2.12s per job
 - 11:44:29 - AsyncProcessPool          | Stack_SingleTime:*: 600 jobs returned an error. Aborting.