In GW 8,02 HP3 on NW 6.5

I've used the gwcsrgen.exe utility to create the Certificate Signing
Request which I sent to GoDaddy
I've downloaded the 2 certifcate files :
1. my certificate
2. intermediate CA certificate.

I concatenated the 2 certificate files into 1 abc.crt file
(DOS Copy my.crt+int.crt abc.crt)

In C1, I point the GroupWise Internet Agent to abc.crt and my SSL key

When I load GWIA, I get a 8920 error in th log - failure in SSL Startup

If I just use the "my certificate" file and the key file, GW loads

How do I get both certificate files to load properly into GW ?