Payment Modules Missing

[Makoshark]

Hello and Merry Christmas
Using latest version and my website is http://shop.nilandplace.com/camp/index.php

I suddenly got 176 emails today some of them 4 months old and from I understand payment is not working. I get an error in the email:

ALERT: PayPal Direct Payment Error (10002 )
Dear store owner,
An error occurred when attempting to initiate the payment-validation transaction. As a courtesy, only the error "number" was shown to your customer. The details of the error are shown below.

10002
Security error
Security header is not valid

Zen Cart message: 10002 Security error - Security header is not valid

I did not include the array data as it contains personal info.
I tried to use the debug but all I get is some kind of SQL file and I can't make sense of it.
When I go to click on the payment module in admin I get one line of text

Error2 [7]: Failed to connect to www.securepay.com IP number 1: Permission denied

I have been after this half of the day and I haven't got any were with it./

[DrByte]

10002 Security Header Not Valid --- means that the username/password/credentials/mode are not valid.
If it was working fine yesterday but not today, perhaps someone has gone into your PayPal account and deleted the old API credentials and re-created new ones?
Or maybe you changed your module settings from live to sandbox or vice-versa but didn't enter the new API credentials for that mode?

[DrByte]

I don't understand why you're getting any errors about securepay though.