I'm in the prison of Helms Hold, next to the Zombie Lord was a locked door to one of the cells, I bashed that in, insde was a chest, but I can't open it, when I bash I get the weponed is not effective message!!
How do I open this chest and what's inside????

Cheers

You may need a magical weapon to bash this type.

I remember that chest. I tried every spell I could and it never opened, could it be a bug??

As far as I know you have to use "open lock" skill to get it open.
Haven´t found a key or anything else that has helped.