Running a Mac with Mohave (current update), JRiver 23; when I try to install I get the flash on the screen and error msg ". . . quit unexpectedly". I've tried deleting all JRiver files, restarting the computer and trying again - several times. The link provided in reply to this original question is no longer valid apparently - tho' I am registered user, tells me it is not available or not available to me.
Apparently there is a known solution posted under the 24 thread but if so, I can't find it via the provided link.
thanks, first lines of the error message follow:
Process: Media Center 23 [578]
Path: /private/var/folders/*/Media Center 23.app/Contents/MacOS/Media Center 23
Identifier: com.jriver.MediaCenter23
Version: 23.0.103 (230104)
Code Type: X86-64 (Native)
Parent Process: ? [1]
Responsible: Media Center 23 [578]
User ID: 501
Date/Time: 2019-01-10 11:35:59.320 -0800
OS Version: Mac OS X 10.14.2 (18C54)
Report Version: 12
Anonymous UUID: D5E128EF-153B-ADDB-7CAD-E03AD6C1EF9C
Time Awake Since Boot: 850 seconds
System Integrity Protection: enabled
Notes: Translocated Process
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Application Specific Information:
Assertion failed: (_eventPort != NULL), function -[SPMediaKeyTap startWatchingMediaKeys], file /Users/jriver/Desktop/Development/ThirdParty/SPMediaKeyTap/SPMediaKeyTap.m, line 76.