load a Mat file previously saved by Matlab itself : not a binary MAT-file

I am using Matlab 2019b on 3 different computers.

on all of them, when I save a MAT-file using Matlab itself and then try to load it, it gives the message:

"Unable to read MAT-file LHS_Samples.mat not a binary MAT-file."

I saved using the command:

save('LHS_Samples');

to save all the variables in the workspace. The variables in the workspace are only arrays and the largest is a 500x10 matrix.

and then I loaded them using:

load('LHS_Samples');

I went to General > Preferences > MAT-files

and tried to choose different Versions to see whether it would change anything, but no luck

I also tried saving the MAT-file as version 4 and then 6: save('LHS_Samples','-v4');

sill, the error persists.

Why can't Matlab load a MAT-file that it created itself? This doesn't make any sense.

any help is appreciated, thanks!

Answer 1

[Conrado Neto]

I just figured it out.

In case anyone run into this problem, my problem was that I am using OneDrive and I did not set the option to "Always Keep on this Device" on, for the folder that Matlab was saving the Mat-files

alternativelly, you can deselect the option: "save space and download files as you use them", that is on Settings > Setting Tab > Files On-Demand.

[ali Turan]

I have same problem but I can't find where "Settings > Setting Tab > Files On-Demand" is.

[ali Turan]

I am sorry. I misunderstood. I supposed "Settings > Setting Tab > Files On-Demand" is on Matlab.