Alright, so today I decided to make our team's Ethas.esm dependent on Dawnguard (and as a result, Update.esm). I go https://dl.dropbox.com/u/7481262/Ethas%20Screens/Dependancy01.JPG alerting me that it would happen, which seemed like a reasonable thing to put before completing the check-in. Of course, wanting to complete this action, I clicked yes.

But then https://dl.dropbox.com/u/7481262/Ethas%20Screens/Dependancy02.JPG. A message literally telling me I was not allowed to do this. Sure, I can understand why it's there. We're likely using a build of the CK that was compiled prior to Bethesda starting on DLC, or maybe they simply forgot to remove that message in our branch. Either way, it's a serious problem for any team using Version Control and using Skyrim's DLC.

If anybody has a workaround, let me know. A post-Dawnguard CK patch would be great as well!

You'll have to make your esm an esp and load it up with Skyrim, Update and Dawnguard esms all selected. Once loaded, save it again and turn it back into an esm.

Be sure to make a backup of your current esm first.

Ah, right. Thanks!