pfc-4: matlab says file might be corrupt?

Maybe I'm doing something silly, but after uncompressing the .mat files from the .gz archive, matlab cannot load the files and says that they might be corrupt.  Matlab is ver 2019b.  Any suggestions?  Thanks...

When I try loading a file it works for me:

>> cd data

>> cd rr014

>> ls

prefront

>> cd prefront

>> r14001 = open("R14001_001.mat")

r14001 = 

  struct with fields:

    result: {141×18 cell}

If you try the above procedure and still get an error, which file is failing to load?

Thanks very much. Problem solved.

It might have been a windows/linux issue.  The original issue was on a Windows system (but I had used "load" rather than "open").

Uncompressing on a colleague's Linux system via tar zxvf data.tar.gz   resulted in .mat files that could be "loaded" on my windows system  So problem solved.