I'd advise anyone who relies on their Xbox One for BBC iPlayer to
avoid the February update preview for now - the current build causes iPlayer to crash
It is a *known issue* though, with a couple of threads in the preview forums and with comments from Xbox staff saying that they are aware of it and are working on a fix.
Luckily for me, pretty much every other device I have (except the Wii U) also has iPlayer.