KB: Error: “Invalid Plugin Detected. Adobe Will Quit.” when starting Adobe Reader 8.1

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KB#: 178
Last updated: April 02 2008

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The information in this article applies to:

• ZoomText 8.1x and 9.0x
• Adobe Reader 8.1
• Windows XP

PROBLEM

If ZoomText is 8.1 or 9.0 are installed on your system, when starting Adobe Reader 8.1 the following error will occur:

“Invalid Plugin Detected. Adobe Will Quit.”

SOLUTION

This problem can be resolved as follows:

1. Exit Adobe Reader.
2. Right-click on the Adobe Reader Icon and choose Properties . From the Shortcut tab click on Find Target button. Double click on the Plug_ins folder, right click on the file Ai2Z_PdfAhoi.api and choose Delete , click Yes to delete this file.
3. Start Adobe Reader.
4. From the Adobe Reader tool bar select Edit > Preferences .
5. Under Categories choose General and uncheck Use only Certified Plug ins .
6. Under Categories choose Document and uncheck Show each document in its own window .
7. Under Categories choose Internet and uncheck Display PDF in browser .
8. Click Ok , then exit Adobe Reader and restart your computer.
9. While Adobe Reader is closed, right-click on the ZoomText Icon and choose Properties . From the Shortcut tab click on Find Target button. Double click on the Inst folder, right click on the file Ai2Z_PdfAhoi.api and choose Copy .
10. Navigate to C:\Program Files folder, double click on Adobe folder, double-click on Reader 8 folder, double-click on Reader folder, double-click on Plug_ins folder, press Ctrl V to paste Ai2Z_PdfAhoi.api file into this folder.
11. Start Adobe Reader.