Larian Studios Forums Divine Divinity (English) Help/Tips/Tricks Teleporters don't work - at Dwarven Halls

I have the exact same problem with my Transporter Stones.I've been thru Stormfist, had the Imp steal them - I went to the Council and got them back and they worked just fine for a while and then I got the same message.Maybe they have a certain time or usage limit? Anyone have any clues?