Print configuration: cannot change some values...

Hi,

I found the following webinar about Print Configurations:

  - Webinar - Using Print Configurations

    https://www.youtube.com/watch?v=IHOW641jhEA

It is based on the windows version - while I am using the Mac version of DraftSight (2017 SPO, newest version on macOX Sierra), so the dialogs are different.

Now, when I try to follow the instructions, add a new print configuration and attach it to a sheet, it seems to be impossible to change some values...

For example, when selecting A4 as paper size, saving the configuration, and reopening it again - the old value (3.5 x 5) is there again.  I tried to change the value over and over again - without any result.  Any hint what could be the problem?

Thanks for your help!

Dietrich