The announcement:
Code:
http://iptvtalk.net/showthread.php?9444-Serial-Numbers-Now-Required-for-Kodi-Addons&p=75232#post75232
Minimally, you'll need to install the new, iVue-friendly IPTV Stalker, at least enabling the Send Serial Number option:
Code:
http://iptvtalk.net/showthread.php?7379-Modified-IPTV-Stalker-(9-0-21)-iVue-compatible-send-serial-number-enabled&highlight=ivue+guide
However, you should create a Custom Serial Number for security purposes. There are plenty of threads dealing with this process.