Lately I have not been able to open pdf files from my gmail on my phone. This just started happening a couple weeks ago. I really need to open them for work. When I get a pdf in my gmail, I go to either Preview or Download and it says Fetching Attachment. But then I get an error that says... document cannot be opened because it is corrupted or damaged. I can open these same pdf files on my pc. What could be causing this all of the sudden? I've had Adobe Reader downloaded for a long time and I keep it updated.