i just had the same thing - you have a couple of options - hit number "1" key that brings dialogue options up (thats for the shadowheart one - unsure if it works in other freezes). Spacebar as mentioned - I found too if you select the "attack option" from the buttons on the bottom left of the screen (where you can change character too) - that bought me through to the camp as well.
Try the number 1 key first as it brings the dialogue options up which is what you really want .
cheers
- there are some very helpful people on the forums luckily
