Links to pdf files (won't open)

for time have been unable open pdf file through web link. however, have no trouble viewing pdf files saved on computer.

i've uninstalled , reinstalled reader still no solution. problem started couple of weeks ago , can't think of reason why.

when click link on website opens pdf file, message:

"there problem adobe acrobat/reader. if running please exit , try again. (3:1074724867)"

in addition, after seeing message, screen advances show following message:

"couldn't load plug in".

i've got adobe reader x 10.1.3, assume it's latest version. have adobe flash player 11 plug in installed.

so @ point, i'm not sure do. don't see addressed on fourms here.

any assistance appreciated.

thank pm. i'm sorry haven't received replies, means no-one knows answer problem.

but let's ask basic questions:

Rest