Reply To: “Adobe PDF Presets” issue…

It sounds as if your system is malfunctioning, and opening a PDF starts Notepad instead of Acrobat. You can test this by double-clicking a PDF in the Explorer. You can check your file extension associations and possibly repair them, or perhaps it's easier to de-install, then re-install Acrobat.

If double-clicking a PDF does start Acrobat, rather than Notepad, in the Explorer, and it's just this one file that does not work … paint me purple and call me an eggplant. The “automatically open PDF” has ID tell your system “hey! show me this PDF” — it doesn't actually start the program itself.