"Window creation error" in Second Life

I’ve just installed LEAP 15.3 and tried to run a Second Life viewer. In the case of both Singularity and Firestorm it failed with the message “Window creation error”. Both viewers have been running very happily under LEAP 15.0 with the respective versions I’ve tried to run.

What might have changed to cause this failure? Any suggestions as to what I might try to fix the problem?

This is now fixed. I hadn’t got the latest graphics driver installed.