Why can't I open PDF and what is error 1606?

When I try to uninstall Adobe Reader the error 1606 message pops up , unidentified publisher, %appdata%, Adobe Reader 9.3.4. Have been unable to open PDF files for awhile.

Launch Adobe Reader from your Launch Pad. Then accept the end user license agreement.
I found that suggestion here >   ADOBE - ACCEPT END USER LICENCE AGREEMENT

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    Launch Adobe Reader from your Launch Pad. Then accept the end user license agreement.
    I found that suggestion here >   ADOBE - ACCEPT END USER LICENCE AGREEMENT

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