why function save and load not work in my matlab R2013a

Dear,

I'm trying to use these functions but it always give me error.

I have a matrix and I need to save it then call it from another file, I used in my version R2012b these command and they work but not in R2013a

    save('Rfile.txt','R','-ascii');
    R=load('Rfile.txt');

so I used

savefile = 'Rfile.mat')
save(savefile,'R');

like this example how not work also in R2013a and its from documentation.

savefile = 'pqfile.mat';
    p = rand(1, 10);
    q = ones(10);
    save(savefile, 'p', 'q');

can anyone tell me please why and how to use them.

regards

[Mr M.]

what is the error message?

[per isakson]

Your script works as expected on 8.2.0.701 (R2013b).

[imola]

Dear,

the error message is

error using save
( unable to write file pqfile.mat: permission denied)

it cases a lot of problems to me, because I need to save and load matrix between files. Thanks for any advice and help.

regards

[Brendan Hamm]

You likely do not have write access to the directory (or file if it already exists) you are trying to save to. What is your operating system?