(FWIW: Someone at work mentioned Foxit Reader a long time ago and I've found it to be less invasive than Acrobat - both are free).
I build in Lego! Blogs at:
http://L3-G0.blogspot.com (or http://L3-G0.com for short)
http://MCK-Y.blogspot.com and
http://BB-8.blogspot.com
http://L3-G0.blogspot.com (or http://L3-G0.com for short)
http://MCK-Y.blogspot.com and
http://BB-8.blogspot.com