Hi Kerk,
This error message could be due to the following reasons:
1) Writing a matrix with more than 10^8 elements. Mat files of the v4 format have a limit of 10^8 elements for matrices. Instead, try saving these matrices in the v5 format.
2) If you are using a third party tool to generate these files, dimensions of the variables could be specified incorrectly in the binary files.
To workaround this issue, try adding your folder under your SET PATH and typing the path and the fileName when using load or save command.
Thanks,
Farouk
