Pay Pal security header not valid

[madkaw9]

Hello all,
Stll in dev and went to test Pay Pal Express checkout and it bounces back with an error as soon as I click the Express Checkout button. I'm using Website Pro as well and have the api configured and checked for proper e-mail address and case. I configured my profile as recommended here . The checked and double checked all those settings. I ran theCURL and IPN test and both looked good. Heres whats in the pay pal log

2009-02-18 07:48:52
-------------------
(sandbox transaction) --> https://api.sandbox.paypal.com/nvp
Request Headers:
Array
(
[0] => Content-Type: text/namevalue
[1] => X-VPS-Timeout: 45
[2] => X-VPS-VIT-Client-Type: PHP/cURL
[3] => X-VPS-VIT-Integration-Product: PHP::Zen Cart - WPP-NVP
[4] => X-VPS-VIT-Integration-Version: 1.3.8a
)


Request Parameters: {SetExpressCheckout}
Array
(
[LOCALECODE] => US
[PAYMENTACTION] => Sale
[AMT] => 59.95
[RETURNURL] => https://www.ionelectriccigarettes.co...er.php?type=ec
[CANCELURL] => https://www.ionelectriccigarettes.co...mp;ec_cancel=1
[PAGESTYLE] => Primary
[METHOD] => SetExpressCheckout
[CURRENCYCODE] => USD
[USER] => featherriverdreamer_api1.yahoo.com
[PWD] => ****************
[VERSION] => 3.2
[SIGNATURE] => ****************************************************Vu7v
)


Response:
Array
(
[TIMESTAMP] => 2009-02-19T02:48:51Z
[CORRELATIONID] => 8d36d5cd7afa
[ACK] => Failure
[VERSION] => 3.2
[BUILD] => 801690
[L_ERRORCODE0] => 10002
[L_SHORTMESSAGE0] => Security error
[L_LONGMESSAGE0] => Security header is not valid
[L_SEVERITYCODE0] => Error
[CURL_ERRORS] =>
)


SetExpressCheckout, Elapsed: 549ms -- Failure

TIMESTAMP=2009%2d02%2d19T02%3a48%3a51Z&CORRELATIONID=8d36d5cd7afa&ACK=Failure&VE RSION=3%2e2&BUILD=801690&L_ERRORCODE0=10002&L_SHORTMESSAGE0=Security%20error&L_L ONGMESSAGE0=Security%20header%20is%20not%20valid&L_SEVERITYCODE0=Error&CURL_ERRO RS=

Any help with this is appreciated.
Thanks

[DrByte]

If your API credentials are from your *live* PayPal account, then you'll need to set the module back into *live* mode instead of *sandbox* mode.