Mike,
Your M matrix is a collection of items. Mathematica defines as 'cell array'
Matlab defines MDA [Multi Dimensional Array]
The vectorie operator must have at least two arguments to produce.
You are attempting to vectorise M over itself, a non sense in some way.
Try to multiply M*N, where 'N' will be of similar construct of different
values and put that under the vectorise operator. You should get result.
Jean
