Problem with cellfun/anonymous function

Thanks to per isakson, I was able to search through one cell array of structs. However, when trying to then search another data structure with the same structure, I get the error shown in the screenshot. What's going wrong?

[per isakson]

see http://www.mathworks.com/matlabcentral/answers/138685#answer_142937

[Ben]

I found that for some reason, when the parameter 'sas2' gets passed in to the anonymous function, it gets passed as a 0x0 double. When I hover over 'restaurants' in the problem line, it shows it as a 1x6000 cell array of structs. I don't know why the parameter is being passed incorrectly.