Tachyon 1.2.16 on MacOS 10.11.x crashes, workaround no longer possible.

[narcogen]

Latest OSX build does not open on El Capitan.

Process: tachyon [18928]
Path: /Applications/Tachyon.app/Contents/Resources/bin/tachyon
Identifier: com.obsproject.obs-studio
Version: v1.2.16.1.0 (0)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: tachyon [18928]
User ID: 502

Date/Time: 2016-12-12 08:58:28.548 +0600
OS Version: Mac OS X 10.11.6 (15G1004)
Report Version: 11
Anonymous UUID: 520B0446-62DC-5515-04BC-DFCBB535DC25

Time Awake Since Boot: 250000 seconds

System Integrity Protection: enabled

Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Exception Type: EXC_BAD_INSTRUCTION (SIGILL)
Exception Codes: 0x0000000000000001, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libavcodec.56.dylib 0x000000010dda7521 ff_me_cmp_init_static + 38
1 libobs.0.dylib 0x000000010d3d54c7 obs_reset_video + 311
2 tachyon 0x000000010d1d498d OBSBasic::ResetVideo() + 637
3 tachyon 0x000000010d1d3c5a OBSBasic::OBSInit() + 202
4 tachyon 0x000000010d1c79a9 OBSApp::OBSInit() + 569
5 tachyon 0x000000010d1c9bcb main + 3947
6 libdyld.dylib 0x00007fffa01e45ad start + 1

Thread 1:
0 libsystem_kernel.dylib 0x00007fff98fe15e2 __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff9bc47578 _pthread_wqthread + 1283
2 libsystem_pthread.dylib 0x00007fff9bc45341 start_wqthread + 13

Thread 2:: Dispatch queue: com.apple.libdispatch-manager
0 libsystem_kernel.dylib 0x00007fff98fe1efa kevent_qos + 10
1 libdispatch.dylib 0x00007fff9ab89165 _dispatch_mgr_invoke + 216
2 libdispatch.dylib 0x00007fff9ab88dcd _dispatch_mgr_thread + 52

Thread 3:
0 libsystem_kernel.dylib 0x00007fff98fe15e2 __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff9bc47578 _pthread_wqthread + 1283
2 libsystem_pthread.dylib 0x00007fff9bc45341 start_wqthread + 13

Thread 4:
0 libsystem_kernel.dylib 0x00007fff98fe15e2 __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff9bc47578 _pthread_wqthread + 1283
2 libsystem_pthread.dylib 0x00007fff9bc45341 start_wqthread + 13

Thread 5:
0 libsystem_kernel.dylib 0x00007fff98fe15e2 __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff9bc47578 _pthread_wqthread + 1283
2 libsystem_pthread.dylib 0x00007fff9bc45341 start_wqthread + 13

Thread 6:
0 libsystem_kernel.dylib 0x00007fff98fe0db6 __psynch_cvwait + 10
1 libsystem_pthread.dylib 0x00007fff9bc48728 _pthread_cond_wait + 767
2 libobs.0.dylib 0x000000010d3ba483 os_event_timedwait + 147
3 libobs.0.dylib 0x000000010d3e8dcd obs_hotkey_thread + 141
4 libsystem_pthread.dylib 0x00007fff9bc4799d _pthread_body + 131
5 libsystem_pthread.dylib 0x00007fff9bc4791a _pthread_start + 168
6 libsystem_pthread.dylib 0x00007fff9bc45351 thread_start + 13

Thread 7:: audio-io: audio thread
0 libsystem_kernel.dylib 0x00007fff98fe110a __semwait_signal + 10
1 libsystem_c.dylib 0x00007fff8e724d0f nanosleep + 199
2 libsystem_c.dylib 0x00007fff8e724c02 usleep + 54
3 libobs.0.dylib 0x000000010d3a84cc audio_thread + 460
4 libsystem_pthread.dylib 0x00007fff9bc4799d _pthread_body + 131
5 libsystem_pthread.dylib 0x00007fff9bc4791a _pthread_start + 168
6 libsystem_pthread.dylib 0x00007fff9bc45351 thread_start + 13

Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x000000010e72bd80 rbx: 0x000000010e70f788 rcx: 0x0000000000000000 rdx: 0x000000010e728f28
rdi: 0x000000010e70f788 rsi: 0x00007fff98b807dd rbp: 0x00007fff52a424d0 rsp: 0x00007fff52a42428
r8: 0x0000000000000001 r9: 0x0000000000000000 r10: 0x000000010ec6e701 r11: 0x000000010db934f1
r12: 0x0000000000000000 r13: 0x000000010d2acb38 r14: 0xdb00678336ed42a6 r15: 0x00007fe81562b300
rip: 0x000000010dda7521 rfl: 0x0000000000010246 cr2: 0x000000011ccb2000

Logical CPU: 4
Error Code: 0x00000000
Trap Number: 6

[snip]

In addition, old versions are now locked out, so the workaround of reverting to 1.2.11 no longer works.