Core Data / Magical Record : Cannot find model for source store

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Hi everyone,

I think I've read all posts about this problem over the Internet, here is what happens to me :

I'm using Magical Record and whenever I want to perform an auto migration, this error message occurs :

Can't find model for source store

To perform this migration, I first create a new data model version, I set it as the current model version ( green checkmark etc... ), I modify it and I run the app.

In my appDelegate, I got this :

[MagicalRecord setupCoreDataStackWithAutoMigratingSqliteStoreNamed:@"DataModel"];

"DataModel" corresponds to my DataModel.xcdatamodeld file.

The thing I noticed : when I display this DataModel in my finder and I select "Show Package Contents", I only have one file, named "content" which corresponds to my old version of my data model ( I don't see the new attributes I set on my new version ). I should have two files : one corresponding to my old version and an other corresponding to my new version, right ?

Does anybody have an idea about how to solve this problem ?

Thanks in advance !

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