I have just installed Jaksta (18.104.22.168) on my Windows XP sp3 computer. Whenever I try to open Jaksta, I receive an Unexpected Fatal Error message: "The requested security protocol is not supported..." (see attached file for screenshot). I believe that this could be a NET.Framework message. I have NET.Framework 4.0 installed. You stated that Jaksta supports Windows XP.
What can I do to get past this hurdle and get Jaksta up and running?
XP does not support TLS 1.1 and TLS 1.2 hence the error. Support for this was added in 22.214.171.124.
You will need to use 126.96.36.199 on XP
I'll see if we can add a check for XP in a future version.
BBC works fine, however, your on XP and I'm not sure what will and won't work on XP given how old and out of date it is.
Are you in the UK? BBC is geo restricted so if you are not you will need to use something like unblock-us.com.
Upload the log files following these instructions: https://support.jaksta.com/discussions/topics/6000009063 and Ill see if there is something obvious.