Okay, I searched the posts...all are more than a year old, so here's the deal. I download DocumentsToGo from the app market. After a while I decided to buy the full version. Had trouble with the developer's web page on my Atrix, so I used my computer and paid for the unlock code. Unlock code was sent to me as a file--an attachment to an email. Which I now can't open on my phone since it came from an untrusted source. The developer isn't much help--I explained the problem and they responded by sending me another email with another attachment--which I can't open. Any help?