Trouble with opening pdf files from hotmail


Dec 20, 2011
I have an acer iconia A501 tablet and am having issues opening pdf files from hotmail. When I click on the attachment, it downloads, but it cannot be opened in any viewer. The following errors are seen:
error opening file. it appears to be damaged
document cannot be opened because it is not a valid pdf

The document shows that it has 0 (zero) pages after download.

Adobe reader, Lumireader and docs to go are installed. I also tried Aikido reader. If I email that same pdf document to my gmail account, I can open it from there without issues.
Any Suggestions to open it from hotmail?