warning in findblockreaction script from cobra

i run the findblockreaction script in Cobra >> blockedReactions = findBlockedReaction(model)

Then i got this warning:

Warning: matlabpool will be removed in a future release. To query the size of an already started parallel pool, query the 'NumWorkers' property of the pool. To check if a pool is already started use 'isempty(gcp('nocreate'))'. The following error occurred converting from cell to double: Error using double Conversion to double from cell is not possible.

Error in findBlockedReaction (line 23) blockedReactions(cnt) = model.rxns(i);

Does anyone know why and how to make it run?

thanks,