Too many input arguments with parfor loop

trying to run this instruction

>> Iteration('Al',[100:25:175],1.33)

function Iteration(type,data,n)
tic
length1 = length(data);
switch type
    case 'Al'
        parfor i = 1:length1                                   % line:21
            if exist(sprintf('%d.mat',data(i)), 'file')==0            
                Slambda_Al(data(i),n);
            end
            fprintf('%d of %d\n',i,length1);
        end

I get this error if the current directory contains a ".m" file otherwise runs without errors.

Error using Iteration (line 21)

Too many input arguments.

[Jan]

Please mention, which one the "line 21" is. You have posted 11 lines only. Posting the complete error message is a good idea. Which m-files exist in the current folder?

[Adel Sarhan]

this is the complete error message

line 21 is marked with a comment, It's the one starting with parfor

the mat files is where my calculation are previuosly saved. I use the "if exist" to check if the current point already calculated to skip the calculation to the next point of the data.

[Walter Roberson]

How many arguments does Slambda_Al accept?

[Adel Sarhan]

two

function Slambda_Al(lambd,n)

[Walter Roberson]

When you say that you get the problem when the directory contains a ".m" file, do you mean that you could set up a situation where the directory contained no .m files and the code would work, but if you were to create ThIsIsAnUnUsEdFiLe.m with empty content, then the parfor would fail ?

[Adel Sarhan]

sorry I meant to say a . mat files of previously calculated data.

[Walter Roberson]

For the purpose of debugging, try commenting out the SLambda_Al call, and instead displaying to i and n values, and seeing if the problem still happens. If it does not still happen then the problem would seem to be associated with the call to SLambda_Al , in which case you could try calling it with constant values like Slambda_al(1,1) and see if the problem still occurred.

I wonder if the problem is actually inside Slambda_al ?