Failing to load a matlab saved strel

[Toby Darling]

Hi

I'm trying to get octave 4.2.0 to load a strel from a file generated by 
matlab (2016b).

In matlab:
  >> x = strel('disk', 1, 0)
  >> x =
  strel is a disk shaped structuring element with properties:
        Neighborhood: [3×3 logical]
           Dimensionality: 2
  >> save from_matlab x


Back in octave:
  octave:1> load from_matlab.mat
  octave:2> whos x
  Variables in the current scope:

     Attr Name        Size                     Bytes  Class
     ==== ====        ====                     =====  =====
          x           1x1                         24  struct

  Total is 1 element using 24 bytes
  octave:3> x
  x =

    scalar structure containing the fields:

      MCOS =

        3707764736
                 2
                 1
                 1
                 1
                 1

      strel =

  error: octave_base_value::print (): wrong type argument '<unknown type>'



Am I missing a trick? Any pointers appreciated.

Cheers
Toby
--
Toby Darling, Scientific Computing (2N249)
MRC Laboratory of Molecular Biology
Francis Crick Avenue
Cambridge Biomedical Campus
Cambridge CB2 0QH
Phone 01223 267070