"Mex file generation" invalid character code error

When I tried to convert the following code to a mex file using coder I've gotten the following error:

Caught "std::exception" Exception message is:
Invalid character code sequence detected.

CODE 1:

%   Y: new data matrix
%   X: training data matrix, each row is one observation, each column is one feature
%   type: type of kernel, can be 'simple', 'poly', or 'gaussian'
%   para: parameter for computing the 'poly' kernel, for 'simple'
%       and 'gaussian' it will be ignored
%   K: kernel matrix

%   Copyright by Quan Wang, 2011/05/10
%   Please cite: Quan Wang. Kernel Principal Component Analysis and its
%   Applications in Face Recognition and Active Shape Models.
%   arXiv:1207.3538 [cs.CV], 2012.

function K=kernel_NewData(Y,X,type,para) %#codegen

N=size(X,1);

if strcmp(type,'simple')
    K=Y*X';
end

if strcmp(type,'poly')
    K=Y*X'+1;
    K=K.^para;
end

if strcmp(type,'gaussian')
    K=distanceMatrix([X;Y]);   
    K=K(N+1:end,1:N);
    K=K.^2;
    K=exp(-K./(2*para.^2));
end

The above distanceMatrix() has only matrix multiplication and conditional operations.

Then, I have tested also a short code "soma.m", but the error persists:

CODE 2

function c = soma(a,b) %#codegen

c =a+b;

Does anybody knows how to solve this?

I'm working on ubuntu 14.04 with gcc/g++ 4.7.

Thanks.

[Walter Roberson]

Could you describe further how you are invoking the coder?

[Ryan Livingston]

Do you have any non-ASCII characters in any relevant directory names? Maybe in pwd, matlabroot, or the codegen build directory?

It would likely be good to contact MathWorks Technical Support regarding this as well.

Answer 1

[Harsheel]

This may occur if your MATLAB current working directory has non-ascii characters. To resolve this, remove any non-ascii character in the full path of the current working directory.

[Douglas]

Thank you.

[konmin dung]

very good. thx!