Fill background display problem in Plotmaker

[Eduardo Bell]

Hello,

Just installed the AC8.1 r2v2 and PM8.1 r2v2 patch for Mackintosh and the following problem shows up which I did not have in with r1v1:
When I open the layout book, all the background fills show up as solid in spite of having reset the background fills to transparent in Plotmaker and Archicad's preferences. The funny thing is that when I update the drawings, everything gets to look as it should, then I save the file and close it. But when I open it again, all fill backgrounds show up again as solid.
I would appreciate any help with this problem, happy Easter.