3 is not a supported class

[viktorpm]

First of all, thank you for this great package. I was trying to read the attached file but I got this error:

Error in read.mat(file.path("D:", "_R_WD", "git_projects", "rat_wm_training", :
Read5: 3 is not a supported class

Is it a mat file version problem?

Many thanks
example.zip