Market Press Error Message With Pay Pal Integration

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    deathoftheweb

    Member  —  28th December 2010 (1 year ago)         

    I installed marketpress on my website:

    http://shop.planet89.com

    I set up an API signature with Pay Pal and put the information into marketpress. Now when I go through the check out process I get the following error message:

    There was a problem connecting to PayPal to setup your purchase. Please try again.
    10002 - Security error - Security header is not valid

    What should I do?