It launches but with this message.

https://prnt.sc/gl8oss
( I clicked "Yes")

Last login: Thu Sep 14 13:26:30 on ttys000
Admins-MacBook-Pro:~ Admin$ /Applications/Armory.app/Contents/MacOS/Armory ; exit;
(ERROR) BDM.py:184 - DB error: DB version mismatch. Use another dbdir!
Unhandled Error
Traceback (most recent call last):
  File "/Applications/Armory.app/Contents/MacOS/py/usr/lib/armory/qtdefines.py", line 610, in MsgBoxWithDNAA
    result = dlg.exec_()
  File "/Applications/Armory.app/Contents/MacOS/py/usr/lib/armory/qtdefines.py", line 58, in wrapper
    result = func(*args, **kwargs)
  File "/Applications/Armory.app/Contents/MacOS/py/usr/lib/armory/qtdefines.py", line 772, in exec_
    return super(ArmoryDialog, self).exec_()
  File "/Applications/Armory.app/Contents/MacOS/py/usr/lib/armory/qt4reactor.py", line 231, in _iterate
    self.runUntilCurrent()
--- ---
  File "/Users/Doug/Downloads/BitcoinArmory-master/osxbuild/workspace/Armory.app/Contents/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/Twisted-16.3.0-py2.7-macosx-10.4-x86_64.egg/twisted/internet/base.py", line 825, in runUntilCurrent
    
  File "/Applications/Armory.app/Contents/MacOS/py/usr/lib/armory/ArmoryQt.py", line 6042, in Heartbeat
    self.closeForReal()
  File "/Applications/Armory.app/Contents/MacOS/py/usr/lib/armory/ArmoryQt.py", line 6387, in closeForReal
    reactor.stop()
  File "/Users/Doug/Downloads/BitcoinArmory-master/osxbuild/workspace/Armory.app/Contents/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/Twisted-16.3.0-py2.7-macosx-10.4-x86_64.egg/twisted/internet/base.py", line 581, in stop
    
twisted.internet.error.ReactorNotRunning: Can't stop reactor that isn't running.