Private Functions: Calling Issue

Hi,

I am trying to use my own home-made private functions with my scripts.
However, MATLAB R2007a (for PPC-Mac) just do not want to see my private
functions.

I have created a folder called 'private' containing my functions within the folder,
where my scripts are located. However, the error message I always receive, when
putting a function in the 'private' folder is:

??? Undefined function or method 'myfunction' for input arguments of type
'char'.

FYI: all folders that contain a folder 'private' are set in my path.

I call these private functions the same way as I call non-private functions. Is that
correct? Or, do I need to use some special statement to call a private function?


Many thanks!