Blank 'Login to cPanel' page - Help me please!

[JJB-Hosting]

Okay well, here's the deal.

I made myself a normal account on my site, got hosting on it etc.
But when I click 'Login to cPanel' USING THE WHMCS SCRIPT it just takes me to a blank screen and the URL is http://:2086

Does anyone know how to fix it?
I got told to find /usr/local/cpanel/logs/error_log but I don't even know how to get there.

Thanks,
JJB-Hosting.com

My site is JJB-Hosting - Portal Home for anyone who wants to see if theres anything abnormal.

 

[Infopro]

If you're speaking of some sort of integration with WHMCS you'd probably do better to visit those forums instead. I'm sure any answers to integration issues you might have will be there.