Why do I receive an error about closing a MAT file in the TEMP directory when I attempt to save a large number of variables using the SAVE command in MATLAB 7.9 (R2009b)?

I get the following error when I try to run a test that loads large data in SystemTest:

Error closing file C:\Temp\test15016941.mat

Answer 1

[MathWorks Support Team]

This is due to the way logged data is saved in MAT files in MATLAB 7.9 (R2009b).

As a workaround, use the -v7.3 option while saving data to MAT files:

save -v7.3 mymat