Three [3] observations:

1. @ opening, Win 7 replies "Smath not responding"
It may reply this warning or may not [puzzling].

2. On recalculation [F9], the Min(N), Max(N)
turns blank ... open new sheet, go back then OK ?? !!
When things turns blank, I drop dead, usually a crash.

3. At the first creation, it crashed the PC ... Oh !
The first creation was minimal 16 x 16

Page1 Randomize Matrix.sm (38 KiB) downloaded 54 time(s).

You might try updating the plugins, just launched the worksheet in a fresh portable version and everything it's fine, except that the plugins downloaded to run the file are newer than those used to create it (99% the problem should be this).

To update the plugins, go to Tools > Plugins... > [Local Storage > Online Gallery], all the blue-ish ones are already installed but outdated (double click to update them).

To update the plugins, go to Tools > Plugins... > [Local Storage > Online Gallery],
all the blue-ish ones are already installed but outdated (double click to update them).

Thanks Davide, 4 plug-ins needed be updated.
Random matrix 96 x 96 works perfect.

Jean