OK, I think I might have figured it out. I was able to reproduce the behavior and find a potential workaround, but beware: it's a little round about, and I'm not sure what side effects it might have for you, so you'll want to do some v1 testing if this works. Try this:
Go to Salesforce Setup > Develop > Custom Settings
Click Manage next to the Preference record (skuid namespace, in case you have another Preference Custom Setting)
Click the Edit button at the top
If Use Component Packs is unchecked, check it and click the Save button
Try it again
If anything breaks for you, you can always uncheck that box and save again. We will look into fixing this behavior, but let us know if this gets you back in business or not!