I upgraded my 3CX PBX yesterday to v15 SP2, running on a Windows server and using Yealink T19P, T42G and T46G phones. Ever since the update, all my BLF lights are out. I can't seem to see the presence of any other on any of my phones now. I can still use them to make calls to the extensions, but I really need the BLF status to work. Is there anyone else having this problem? Restarted the services, the server, the phones, and set a couple back to factory default and reapplied templates with no effect yet.