IPhone : Dyld Error Message: Library not loaded: @rpath/libswiftAssetsLibrary.dylib

When we build our app for ad hoc deployment and run it, the app crashes right away and I see the following in the crash logs:

**Dyld Error Message:**
  **Library not loaded: @rpath/libswiftAssetsLibrary.dylib**
  Referenced from: /private/var/mobile/Containers/Bundle/Application/73FD1DE2-820C-443C-B7CA-B79DB9CF3466/MyApp.app/MyApp
  Reason: no suitable image found.  Did find:
    /private/var/mobile/Containers/Bundle/Application/73FD1DE2-820C-443C-B7CA-B79DB9CF3466/MyApp.app/Frameworks/libswiftAssetsLibrary.dylib: mmap() error 1 at address=0x0052F000, size=0x00004000 segment=__TEXT in Segment::map() mapping /private/var/mobile/Containers/Bundle/Application/73FD1DE2-820C-443C-B7CA-B79DB9CF3466/MyApp.app/Frameworks/libswiftAssetsLibrary.dylib
    /private/var/mobile/Containers/Bundle/Application/73FD1DE2-820C-443C-B7CA-B79DB9CF3466/MyApp.app/Frameworks/libswiftAssetsLibrary.dylib: mmap() error 1 at address=0x0053A000, size=0x00004000 segment=__TEXT in Segment::map() mapping /private/var/mobile/Containers/Bundle/Application/73FD1DE2-820C-443C-B7CA-B79DB9CF3466/MyApp.app/Frameworks/libswiftAssetsLibrary.dylib
  Dyld Version: 353.10

As per suggestions from different questions on SO, we've tried the following without luck:

1. Revoke and regenrate certs


2. Make sure the new cert has OU set


3. Make sure the runpath has @executable_path/Frameworks


4. Make sure embedded content contains swift code is set to yes.

We're still running into this issue. Any help/pointers will be greatly appreciated.