I have created a ticket but thought this might help here too. I am unable to zone into Tombs of Night on the EU server. I changed over to the US servers and i can zone in as usual. On digging around i found that when i change to EU server the file mod01_dun_tombs_of_night.vpk is deleted. Manualy replacing it doesn't work. Any help would be greatly appreciated.
I had the same issue, the file exists if I start US English, but disappears as soon as I choose EU English. I did like this: I copied the files (both Tombs of Night zone files) that appeared when I choose US English onto desktop (directly copy/paste between directories did not work). Then I launched EU English, choose Game Directory and copied the files from desktop into the "pak" directory. Then launched the game. I am currently, as I write, standing in the Tombs of Night zone on the EU server