Why does my NSManagedDataModel have no entities after I add another version of the DataModel? - nsmanagedobjectmodel

Question

Why does my NSManagedDataModel have no entities after I add another version of the DataModel?
MacBook Pro Late 2008, OS X 10.8.5, Xcode 5.0.2,
Project has two apps, one OS X, one iOS, both share a datamodel
Recently add a new dataModel Version
DataModel involves four subClasses of NSManagedObject. Each of the four Classes received two identical changes, namely
the addition of two attributes:
modified NSDate
uid NSString
I did not select the option: Use scalar properties for primitive data types when generating
the files of the four classes.
When the following four lines execute in the OS X app,
NSString *path = [[NSBundle mainBundle] pathForResource:#"SqliteFromXml" ofType:#"momd"];
NSURL *momdURL = [NSURL fileURLWithPath:path];
managedObjectModel = [[NSManagedObjectModel alloc] initWithContentsOfURL:momdURL];
NSLog(#"path=%#\nDataModel=%#\nEntities in DM=%#",path,managedObjectModel,[managedObjectModel entities]);
This is the output:
path=/Users/appleuser/SqliteFromXml/Debug/SqliteFromXml.app/Contents/Resources/SqliteFromXml.momd
DataModel=(<NSManagedObjectModel: 0x1001d1b80>) isEditable 0, entities {
}, fetch request templates {
}
Entities in DM=( )
The momd bundle is being created on each run, but is has 0 entities.
The .app bundle Contents looks this way:
https://www.dropbox.com/s/68iy8gjqbv0m0tq/Screenshot%202014-02-16%2018.03.02.png
Many Thanks, Mark

Answer 1

Datamodel bundle name: IHM_Recipes.xcdatamodeld (developed as part of the original iOS app)
There are two products both sharing a common datamodel:
iHungryMePlus (iOS)
SqliteFromXml (Mac)
There was a user error in my choice of param for pathForResource: for the first line of code below:
NSString *path = [[NSBundle mainBundle] pathForResource:#"IHM_Recipes" ofType:#"momd"];
NSURL *momdURL = [NSURL fileURLWithPath:path];
managedObjectModel = [[NSManagedObjectModel alloc] initWithContentsOfURL:momdURL];
I used pathForResourceParam == #"SqliteFromXml". Sorry to waste your time. Because a momd file named SqliteFromXml.momd was created, I wrongly concluded that pathForResourceParam was
used for targeting rather than searching. I see now this was very bad logic. This approach to create a MOM came from Jeff Lamarche.