Error using callViewer 18 - GUI will not load

[Cordine]

Hello!

I've been trying to use the code and encountered the following error when calling for callViewer18. Would appreciate any advice on possible steps/files I may be missing.

callViewer18

Error using load
Unable to read file 'callViewer18.fig'. No such file or directory.

Error in matlab.graphics.internal.figfile.FigFile/read (line 31)
hgDataVars = load(filename, '-mat', '-regexp', '^hg[M]');

Error in matlab.graphics.internal.figfile.FigFile

Error in hgload (line 54)
FF = matlab.graphics.internal.figfile.FigFile(filename);

Error in matlab.hg.internal.openfigLegacy (line 57)
[fig, savedvisible] = hgload(filename, struct('Visible','off'));

Error in gui_mainfcn>local_openfig (line 286)
gui_hFigure = matlab.hg.internal.openfigLegacy(name, singleton, visible);

Error in gui_mainfcn (line 158)
gui_hFigure = local_openfig(gui_State.gui_Name, gui_SingletonOpt, gui_Visible);

Error in callViewer18 (line 42)
gui_mainfcn(gui_State, varargin{:});

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Thank you!