Huge trouble with PDF since the last updates

[Dezea]

Hey guys !

Since the last big updates (I would say around two weeks ago) I simply can't use PDF anymore.

Hero Lab ask me to update my PDF plugins, but sadly when I attempt to do so... The installer tell me that my pdf plugins is open somewhere else, and that he can't install it.

Wich, obviously, sadden me a lot *-*

I guess this has probably more to do with my computer having some trouble, but did anyone encountered the same problem ? Or have any advice ? I would be really grateful for any help on the matter...

Thanks a lot !