Do note that the MAXACTVP value must be between 2 & 64.
The number you enter is the number of Active Viewports in a Drawing file, a total of all of those in every Layout.
Also note, that if the number of Fiewports exceeds your selected number, some of the Fiewports will be "off".
If you then turn "on" a Viewport that was "off", somewhere else an "on" Viewport will turn "off".
However, all of the Viewports, whether "on" or " will still plot.
Read Ya Later -Cliff