Following an update earlier on Thursday that caused the client to crash on a number of Windows Phone 8 handsets, the official Facebook client has picked up a rather rapid bug-fix, which takes care of the issue and is now available in the Windows Phone store.

The first update, v 4.2.0.0, had some issues when accessing comments and notifications which caused the app to crash. That's now been taken care of, so look for the bug-fix version of 4.2.1.0.

Windows Phone 7 users are on a different version tree, and there are no issues with their latest update, v2.7.

The Facebook client for Windows Phone is a strange beast, developed by Microsoft with engineering support from third party developers. This is different to the arrangement on iOS and Android, where Facebook develop those clients in-house.

You can pick up the new build from the Windows Store on the web or update it from the Windows Store client on your handset.