I can't use Homer3. Because , "fprintf" does not function well.

[OsHideyuki]

Version of Homer3 you are using
MATLAB Runtime R2021b, MATLAB R2017b; Windows 10 64-bit

Description of the issue

function SetLastCheckForUpdates(dt)
if ~exist('dt','var') && ispathvalid([getAppDir, 'LastCheckForUpdates.dat'])
    return;
end
if ~exist('dt','var')
    try
        dt = datetime;
    catch
        dt = -1;
    end
end
fd = fopen([getAppDir, 'LastCheckForUpdates.dat'],'wt');
fprintf(fd, '%s\n', dt);
fclose(fd);

I think fd should become 1 or 2.
But, this code make fd to -1 .
Please fix the program or commentes to me.

[anjula04]

Got the same error in MATLAB2023b when the path was in the C:\Program files.... for which administrator rights are required. Didn't get this error when I moved the Homer root folder to another location/drive.