Functions from the search part are not detected despite correct listing

Hi,

I'm experiencing the following problem when using Matlab R2012a regarding the search path definitions: When getting the search path information using "path" from the console after program start all relevant folders are listed correctly. Especially the folder "C:\Program Files\MATLAB\R2012a\toolbox\matlab\iofun" is listed which contains important functions to open m-files. Despite the correct entries inside the search path I can't open any m-file with Matlab - If I'm trying to open one I'm getting the error display

Undefinedfunction 'fileparts' for input arguments of type 'char'

I don't have any clue why that happens. The search path definition is correct and until today my Matlab version worked for months without any similar problem. Can somebody help?

Answer 1

[Star Strider]

My first approach for such problems is to run these functions:

restoredefaultpath 
rehash toolboxcache

See the documentation for the functions to see what they do.