dpc

Thanks for the information. I appreciate your response. I should note that sometimes the rectangles resolve after a while. Most of the time they never do irrespective of how long I wait. I downloaded AP 1.9.1.219 Beta yesterday and the situation improved dramatically. I tried it with several files and they all rendered nicely except one which failed to render properly.

Thanks, anon2! I appreciate the help. Have a good day.

Thanks walt.farrell! Problem solved. It was the opacity slider. I didn't realize you could adjust the opacity on a brush that was basically a sophisticated erasure. Have a great one. Thanks to all who responded.