It looks like the certificate is missing the IA (Intermediate Authority), or possibly the layout of the certificate is wrong.
On my Nginx I have it as:
- Server
- IA
- Private Key
Is this what yours looks like?
EDIT:
Let me try and clear things up a bit, you would have had to generate a CSR and private key when requesting your certificate. After which your SSL provider would have sent you a bundle including the following, dependent on what format you requested the certificate to be sent.
- CA Root Certificate
- IA Certificate (They sometimes send 2)
- Server Certificate
Use a text editor to open the above mentioned certificates, also create a new called static.watchgurus.net.pem.
You can now paste the Server, IA and Private Keys in this order and save the .pem. Use Keystore Explorer to open the newly created .pem, it should show the IA then have a little branch down showing static.watchgurus.net.
Like this:
Google Certificate Chain