Can't connect to FreePBX web interface

Hi All!
I’ve recently build a AstriskNow/FreePBX (3.0.0) box with some SIP phones that I wish to install in my small office. I started with the setup in my home with the new box and phone connected to extra ports in my Linksys wireless router.

I was given the IP address . Fine. I was able to connect via browser to this address and configure the web interface and use my system almost perfectly.

I took the system to my office, plugged into the network, and got the IP address . When I tried this address to access the web interface … nothing.

I tried assigning static ip addresses …nothing. I’m going crazy here. Can anyone offer any advise?