Adobe Reader couuld not open '0071546472.spdf' because it is either not a supported file type or because the file has been damaged (for example, it was sent as a email attachement and wasn't correctly decoded)
Download and install unsealer from the following site: http://www.ichapters.co.uk/market/eBookAccess.html#
'b'I downloaded to my desktop and ran it from there. After several attempts (there were problems with my C driver initially) it worked and now I can access my spdf files.
'b'Previously i was getting the same error message shown above.
'b' All the best in installing!