Use a chitin.key file from something like BP-light. Shadowkeeper should work fine with that. (rename your chitin, then slot that one in, load SK, change the chitin back)
A very stable working beta is sitting on my harddrive. I just have to clean the puppy up a bit, then send it off to the BG1NPC gang to either cremate, set up as a second download, or integrate with the regular project. I may get to that over the next couple of days. Depends on how work goes. (And whether I get shanghai'd into another project/patch over the next few days!)