Paypal express not working. 10002 Security header is not valid

Here's my Paypal Log Error info

2007-12-14 04:21:33

(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: 0.1
)

Request Parameters: {SetExpressCheckout} Array (
[LOCALECODE] => US
[PAYMENTACTION] => Sale
[AMT] => 70.00
[RETURNURL] => http://www.raptorman.ca/shop/ipn_main_handler.php?type=ec
[CANCELURL] =>
http://www.raptorman.ca/shop/index.php?main_page=login&ec_cancel=1
[PAGESTYLE] => Primary
[METHOD] => SetExpressCheckout
[CURRENCYCODE] => CAD
[USER] => efman_api1.rogers.com
[PWD] => ****************
[VERSION] => 2.3
[SIGNATURE] => ****************************************************8EIk
)

Response:
Array
(
[TIMESTAMP] => 2007-12-15T00:21:29Z
[CORRELATIONID] => 2de3a754124d7
[ACK] => Failure
[L_ERRORCODE0] => 10002
[L_SHORTMESSAGE0] => Security error
[L_LONGMESSAGE0] => Security header is not valid
[L_SEVERITYCODE0] => Error
[VERSION] => 2.300000
[BUILD] => 1.0006
[CURL_ERRORS] =>
)

Any help would be appreciated. The Paypal express worked at first and was GOLD.

Thanks in advance.

(sandbox transaction)
```You've got the module set to Sandbox mode, but you're probably using a live account. 

If you're using sandbox mode, you need to get sandbox API credentials.
If you're using live mode, you need to use your real account API credentials.

That was the first time I tried sandbox mode.

I'll try real account.

Why wont my SSL work?

efman:

Why wont my SSL work?SSL discussion moved here:
http://www.zen-cart.com/forum/showthread.php?t=82993