Hi joe,
When I Click the "Make Payment" button, the following problems :
TIMESTAMP=2010%2d01%2d11T00%3a44%3a52Z&CORRELATIONID=cc8b1337a2261&ACK=Failure&VERSION=3% 2e2&BUILD=1152253&L_ERRORCODE0=10002&L_SHORTMESSAGE0=Security%20error&L_LONGMESSAGE0=Security%20header%20is%20not%20valid&L_SEVERITYCODE0=Error . I'm using PayPalDirect model .Version:2.3.2.9
Thanks