I have a client running XP Pro x64 with Acrobat 9.0 Standard.
When a single PDF is open, Acrobat behaves normally.
When multiple PDFs are open, a black box appears on top of the PDF that gets moved to the back by the second PDF. Additionally, clicking on an image in the PDF - when multiple PDFs are open - will display a black box over the picture. This box will also cascade onto additional pages in the PDF.
These boxes will go away when the page view options are changed, but will reappear on the original page view.
This is not a video issue, the client is a workstation with a high-end card.
I have updated, uninstalled, re-installed and re-updated Acrobat with no luck.
Does anyone have any idea what is causing this?
Lori Kassuba is an AUC Expert and Community Manager for AcrobatUsers.com.