Error: Struct contents reference from a non-struct array object

I am using version 6.18.01 Pro.  Matlab version 2017A.

I am trying to create a constructor  file.  After running awe_init, I run the file  M=peakDetect_module('temp') . I am getting the error shown below. 

What am I doing wrong?  I tried  running older files that have worked in the past with an older version.  With the new version I get errors in these files as well.

Struct contents reference from a non-struct array object.

Error in awe_variable_subsref

Error in awe_module/subsref

Error in peakDetect_module>peakDetect_set (line 126)
M.attackCoeff=design_smoother(M.attackTime, SR, 1);

Error in awe_module/update

Error in peakDetect_module (line 97)
M=update(M);