Cannot attach DXF from email while installed! – AutoCAD Review

I downloaded this to view cad files on my phone. I usually send .dxf files (NOT links) to our vendor from Dropbox via email, but after I downloaded it, ALL of the DXF files in Dropbox were grayscale. The thing is that I hadn't even opened or registered AutoCAD 360- it had *just* been downloaded. After finding nothing online, I decided to remove AutoCAD 360. After removing it, things went back to normal. This is WAY too invasive.
Review by Funkystank on AutoCAD.