EDIT: I started a bigger "official thread" on this subject, don't reply here anymore (if you get to this thread via searching): http://www.droidforums.net/forum/te...tachment-cannot-displayed-pop-imap-email.html Some PDFs open, but some as attachments it says "This attachment cannot be displayed." Any idea why? This is clearly a problem that many people are having, not just me. But I can't find a single solution on Google, aside from saving it and resending it to myself (something you can't do if you get a document on the road). I travel a ton and this is really important to me. Also, I can't stress enough that while I am using Documents to Go (Full) it doesn't matter what program you use it seems (from my results on Google). --- PS - I originally had this thread in the Droid problems section because I didn't see this section at the time. Hopefully it will get more traffic here.