I understand that you are having some issues with your Slingbox, since you are not able to get it up and running.
If you get the connection error message on you home network, it means that something is not working as it should. Since your Slingbox shows solid lights but you are not able to locate it, the issue seems to be related to the security software running on that computer. The following link will provide you with some steps to follow.
You can also try to download and install the SlingPlayer software on your computer in order to set it up. The following link will allow you to get this software version.
Once you locate the Slingbox, make sure to run the Setup Assistant for Internet Viewing.
Finally, this link will provide you with the steps to follow in order to adjust the router settings.
Make sure to follow these instructions and post back your results.
I too am being frustrated by a similar issue. My Slingbox Solo has worked well for many months. Now, since the latest update to Slingplayer for iPhone, I can no longer view remotely over 3G.
I have gone into setup assistant and found that the slingbox keeps changing the port to be forwarded. I keep changing this back to 5001, it works for a day, then the next day it no longer works, gives me the `Your device or slingbox are not connected to the internet` message and no longer works.
Going back into set up assistant and it has automatically reassigned the port from 5001 to a another random one.
I have not added anything to my network.
Can you help?