Socket Error

[dan]

That error usually indicates that either the program is already running in the background or some other server is using the same port which is now 80 by default.

If the program is already running in the background you should be able to clear it with the command

Code:

sudo service sip stop

or reboot the Pi.

If another server is using port 80, which is a default web site port, you can try editing the file SIP/data/sd.json .
You will need to find the part

Code:

 "htp": 80,

and change 80 to something like 8080. Then you will need to add
":8080" (without the quotes) to the url of your SIP installation.