Two instances executing when launching standalone exe

Any idea how to prevent my standalone MATLAB 32-bit windows application from executing twice upon startup? Basically what happens is that the main m-file executes twice in succession. I have no idea why this happens.

I evoke the mcc from a separate m-file:

mcc -o '<programname>' ...

    -W 'main' ...
    ...
    ... % Output folder
    -d 'C:\Users\Admin\Documents\MATLAB\Compiler\Distribution' ...
    ...
    ... % <programname>.exe icon
    -M 'C:\Users\Admin\Documents\MATLAB\Compiler\<icon>.res'...
    ...
    ... % Main m-file
    -T 'link:exe' -v 'C:\Users\Admin\Documents\MATLAB\compiler\other files\startup.m' ...
    ...
    ... % Additional m-files
    -a 'C:\Users\Admin\Documents\MATLAB\compiler\other files\<file1>.m' ...
    -a 'C:\Users\Admin\Documents\MATLAB\compiler\other files\<file2>.m' ...
.
.
.
    -a 'C:\Users\Admin\Documents\MATLAB\compiler\other files\<lastfile>.m'

Everything else works perfect, except for this dual launching thing.