error with applycform function

I tried to use applycform function, then the matlab gives me the error message saying "Undefined function 'applycformsequence' for input arguments of type 'cell'."

Error in applycform (line 88)

out = c.c_func(columndata, cdata{:});

I don't get it because I runned applycform function, not applycformsequence. I It happened when I tried the examples, like

I = imread('Fig1.png');

C = makecform('srgb2xyz');

I_xyz = applycform(I,C);

Then, the same error message came. Is this error coming from the function itself?

[Geoff Hayes]

applycformsequence may be a function called from within applycoform. Which version of MATLAB are you using, and what do you observe if you type

 which applycformsequence -all

in the Command Window?