Anybody encounter the word wall at Foresaken cavern where the music starts when approaching the wall but the letters do not glow and you cant read them and hence absorb the new Thuumm?

Bit of a pisser

Have you tried exiting and re-entering the dungeon and see if it works then? While I have yet to run into this particular glitch, I did have one dungeon where I couldn't turn the little plinths for one of the puzzles, and it was only by exiting and re-entering that I was then able to use them.

Did you get close enough to the wall?

Yep was right on top of it, thing was the words never glowed at all. sigh!