The GUID token needs to be entered in the web.config file of the SDK. There's a section in that file that describes where and how to enter it.
You can probably google GUID and find some tool that does it, if not here's one: CF0158AB-0857-4f51-9081-A77877A5D5BC
If you want to can manually create your own following the format of the GUID above, they're all hex digits.
NOTE: for security reasons you should probably modify the above GUID before using it, because it may allow others to connect to your SDK (assuming they have access to the SDK's URL).
Dan Suceava
http://www.axosoft.com