knitromatlab error: Undefined function 'knitromatlab' for input arguments of type 'double'

Hi all,

I am currently using knitromatlab. I have installed and checked the installation using [x fval] = ktrlink(@(x)cos(x),1). ktrlink returns x = 3.1416, fval = -1 indicating successful installation as defined within the knitro user manual.

Even though the installation is successful I keep getting the following error:

Undefined function 'knitromatlab' for input arguments of
type 'double'.

Error in Objective (line 152)
[x,fval] = knitromatlab(objfun,x0,A,b,Aeq,beq,lb,ub)

Does anyone know why this is happening. Is there some kind of bug in my license or am I doing something wrong?

Thanks in advance!!

[Walter Roberson]

This seems to relate to either http://www.mathworks.com/products/connections/product_detail/product_35842.html or http://tomopt.com/tomlab/products/knitro/