Using AutoCAD Mechanical 2012
I have three viewports created on the Defpoints layer. I hid the layer on the plotter tab so the lines do not print. I have done this for years. I have never had any problems.
Today, I turned the Defpoints layer back on to modify the viewport sizes in a particular drawing and it will not let me select the viewports. They appear but are not selectable.
Any suggestions would be greatly appreciated.