I can't open any pdf's and I consistently get the error message AR has encountered a problem. I am running 8.1 with xp. Thank you for your assistance on this.
BTW, before I reinstalled my operating system, I had no problems, but something is very wrong.
Also try running the Repair installation from the Control panel for both Acrobat and Reader. Make sure you've installed all updates, enabled all Adobe add-on in Internet Explorer, and run a disk clean-up to remove the temp stored error messages.
My favorite quote - "Success is the ability to go from one failure to another with no loss of enthusiasm.