Core Data Migration - Can't find mapping model for migration

Question

I followed the guide found here: http://www.timisted.net/blog/archive/core-data-migration/ but keep getting \"Can\'t find mapping model for migration\" when I start up the a

Answer 1

I had a similar problem:

Custom Policy in my xcmappingmodel will not be executed

in my case it was not executed since my migration did not do any changes to the tables - maybe this is your problem too.