Library Not Loaded on startup using Native Reference to HockeySDK

This is a repost of sorts of the last comment in this thread:
https://forums.xamarin.com/discussion/67130/hockeysdk-for-xamarin-mac#latest

I have separated this out for clarity as it is actually a different error to the main theme of that thread.

We are getting an error at startup running any application that has a native reference to the HockeySDK (available at https://download.hockeyapp.net/sdk/mac/HockeySDK-Mac-4.1.0-beta.4.zip)

The error experienced is

Process:               HockeySDKApp [4219]
Path:                  /Users/USER/*/HockeySDKApp.app/Contents/MacOS/HockeySDKApp
Identifier:            com.companyname.hockeysdkapp
Version:               ???
Code Type:             X86-64 (Native)
Parent Process:        ??? [1]
Responsible:           HockeySDKApp [4219]
User ID:               501

Date/Time:             2016-07-26 13:54:43.449 +1200
OS Version:            Mac OS X 10.11.5 (15F34)
Report Version:        11
Anonymous UUID:        9C85D0A4-2BC6-21CA-6229-41010E7390F3


Time Awake Since Boot: 11000 seconds

System Integrity Protection: enabled

Crashed Thread:        0

Exception Type:        EXC_BREAKPOINT (SIGTRAP)
Exception Codes:       0x0000000000000002, 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Application Specific Information:
dyld: launch, loading dependent libraries
DYLD_FALLBACK_LIBRARY_PATH=/Applications/Xamarin Studio.app/Contents/Resources/lib:/Applications/Xamarin Studio.app/Contents/Resources/lib/monodevelop/bin:/Library/Frameworks/Mono.framework/Libraries:/lib:/usr/lib:/Library/Developer/CommandLineTools/usr/lib:/usr/local/lib

Dyld Error Message:
  Library not loaded: @rpath/HockeySDK.framework/Versions/A/HockeySDK
  Referenced from: /Users/USER/*/HockeySDKApp.app/Contents/MacOS/HockeySDKApp
  Reason: image not found

Binary Images:
    0x7fff69c94000 -     0x7fff69ccb25f  dyld (360.22) <A468D85E-D8D6-3461-8C99-49D3B9ACFC63> /usr/lib/dyld

I have attached a number files to help with the reproduction of this problem.

First is "HockeySDKXamarin.zip". Running this should show the crash (with errors appearing in ~/Library/Logs/DiagnosticReports)
Second is "HockeySDKXCode.zip". This shows HockeySDK.framework loading correctly from an equivalent XCode solution.

Curiously, if within the XCode solution HockeySDK.framework isn't correctly copied to the Framework folder using a Copy FIles Build Phase, the same exact error as above (as with Xamarin occurs). This would suggest the app coming out of Xamarin cannot find HockeySDK.framework. Expanding the application package does however reveal it is there. Is there a permissions or signing issue?

Any help appreciated!
Andrew