What do in need to do to rename the .xcdatamodel file. Renaming .xcdatamodel filename, along with changing ...
NSURL *modelURL = [[NSBundle mainBundle] URLFo
Looks like momd missing in resources files. You can check in generated .app.
Make sure it is in compile sources build phase.
And clean/rebuild sometimes helps with xcdatamodels... Especially when creating/renaming them...