I was deploying an app I work on to a Winter16 prerelease org and my deployment is failing. All the child objects (have the detail end of a master-detail relationship) are failing to deploy with the message:
Cannot enable enhanced lookups for this object: SomeCustomObject__c
I do have a
<enableEnhancedLookup>true</enableEnhancedLookup> element in all of the metadata for these custom objects, but this was never an issue previously, and I can't find anything saying enhanced lookups are de-supported on detail objects (and that would be horrible if it was the case).
All other types of objects seem to work. Google turns up nothing for this error. What's going on?