M-File not accessible in Excel Add-in

Hi,

I generated an Excel Add-in using the Library Compiler with MS Win SDK 7.1 in the background. The compilation worked fine and the xla file was generated. Once imported to Excel, I called the newly programmed function =fitSVP(D4:N25). However, I received the error

Error in fitSVP.Class1.1_0: Previously accessible file "J:\Work\Research\0030-Calculations\MatlabFiles\fitSVP.m" is now inaccessible.

and the output is not generated. The path is a network drive and added to Excel as trusted location. The spelling is correct and the file is there. Any ideas how to overcome this error?

Thanks, Sieghard

[Harsheel]

The .xla file should not invoke non-compiled .m file. Does your compiling file have hard-coded paths to other .m files?

[Sieghard]

No, it doesn't. It is a simple regression function programmed with the optimization tool box. The fitSVP.m file is the original file I compiled, i.e., the one where the function is in. The full fitSVP.m file looks like that:

function coeff = fitSVP(xydata)

nbrMP = length(xydata(:,1));
nbrVar = length(xydata(1,:));

xdata = xydata(:,nbrVar-4:nbrVar);
ydata = xydata(:,1:nbrVar-5);

fcn_svp = @(x,xdata)x(1)+x(2).*xdata(:,1)+x(3).*xdata(:,2)+...+x(21).*xdata(:,5).^2;

x0 = zeros(1,21);

coeff = zeros(nbrVar-5,21);

for i = 1:nbrVar-5

      coeff(i,:) = lsqcurvefit(fcn_svp,x0,xdata,ydata(:,i));

end

coeff = transpose(coeff);

end

Any ideas?

Thanks!

Answer 1

[Friedrich]

Hi,

do you have a startup.m file which set up paths, CDs into something? Something messed up the search path of the compiled add in which leads to the addin trying to access a noncompiled m file.

Answer 2

[Sieghard]

Thanks, that helped. I still do not quite understand why, but removing the startup.m file and copying it to the base search path did the trick. Thanks a lot!!!!