Install is good, but 90% of my desktop icons become acrobat reader icons. If I double click on one of the icons - a message reads "acrobat cannot open 'pgmname'.exe not supported file format etc. etc. (pgmname is the application I'm trying to open). I un-installed 8.1.12 and everything is fine. I re-installed today and the same thing happens. I have a Dell laptop running Vista Home Premium. I believe this started after I installed XPSEP Vista 32bit. I needed this to print invoices from Quickbooks.