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install.php line 32 to 41 change the param function to

function param($name, $method)
{

    // Use ternary, check if the method exists in the super global area, ie _METHOD
    // If so return the value from that array, otherwise use the GLOBALS array
    // along with the HTTP_METHOD_VARS index to return the correct value
    return @isset($GLOBALS["_{$method}"]) ? $GLOBALS["_{$method}"][$name] : $GLOBALS["HTTP_{$method}_VARS"][$name];
}

modules/common.lib.php line 818 change the line to

    $var = isset($GLOBALS["_{$method}"]) ? $GLOBALS["_{$method}"][$name] : $GLOBALS["HTTP_{$method}_VARS"][$name];