I have problem with Layers when I create new layer which base on activ layer it schould have specification (color, type of line etc.) as the activ layer.
In my case it's have the base specification (black/white color, continous line...) but when I change specification my ne layer and I started to draw the specification reset and is in my ne w layer the same as a base layer - layer 0.
I work on Windows 7 64 bits, AutoCAd Mechanical 2012 with Service Pack.
I have the same problem with AutoCAD Mechanical 2011 but when I install SP the problem disappear.