First, I would like to thanks the devs for providing us with the long awaited Mac Wallet dmg installer 
Following is an extract from the Apple issue report. I just pasted the description of the context & displayed error, if more precise info are needed - detail of libs - I can pm it
Edit:
- same issue on a 10.12.5 MacMini server.
- the last MUE (quark) Core Wallet was working nicely on El Capitan (10.11.x) & Sierra (10.12.x)
- Sorry!!! I didn't realize that my post was in the wrong place... As I saw 'wallets' I dropped my post here too fast! Could an admin create a 'Wallets' topic? I will move my post there asap.
========
Process: MonetaryUnit-Qt [62896]
Path: /Applications/MonetaryUnit-Qt.app/Contents/MacOS/MonetaryUnit-Qt
Identifier: org.mue.MonetaryUnit-Qt
Version: 
Code Type: X86-64 (Native)
Parent Process: [1]
Responsible: MonetaryUnit-Qt [62896]
User ID: 501
Date/Time: 2017-07-11 23:04:38.186 +0200
OS Version: Mac OS X 10.11.6 (15G1217)
Report Version: 11
Anonymous UUID: 97DCC57A-D22D-253D-D6B2-794CCBEE3BD3
Sleep/Wake UUID: 4F1445AC-64FC-4D77-BB8F-675EC3524B95
Time Awake Since Boot: 2000000 seconds
Time Since Wake: 4000 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 Error Message:
Library not loaded: @loader_path/libboost_system-mt.dylib
Referenced from: /Applications/MonetaryUnit-Qt.app/Contents/Frameworks/libboost_thread-mt.dylib
Reason: image not found
