Crash on Watch unwrapping CMPedometerHandler

[Trifusion]

I am getting a crash on the Apple Watch (original) running watchOS 3 linked to an iPhone5. The crash occurs in startPedometerUpdates() and appears to be caused by the force unwrap of the handler as a CMPedometerHandler.

Date/Time: 2016-10-12 09:59:43.3892 -0400
Launch Time: 2016-10-12 09:59:37.0000 -0400
OS Version: Watch OS 3.0 (14S326)
Report Version: 104

Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000001, 0x00000000e7ffdefe
Termination Signal: Trace/BPT trap: 5
Termination Reason: Namespace SIGNAL, Code 0x5
Terminating Process: exc handler [0]
Triggered by Thread: 0

Filtered syslog:
None found

Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 ...-Example WatchKit Extension 0x000e82b0 0xe0000 + 33456
1 ...-Example WatchKit Extension 0x000e7fb4 0xe0000 + 32692
2 ...-Example WatchKit Extension 0x000e7ff4 0xe0000 + 32756
3 WatchKit 0x2e84791c -[SPRemoteInterface _activateViewController:clientIdentifier:] + 136
4 WatchKit 0x2e85e4f2 -[WKInterfaceController _finishGestureInstallationWithCompletion:] + 316
5 WatchKit 0x2e847798 __61-[SPRemoteInterface activateViewController:clientIdentifier:]_block_invoke + 126
6 libdispatch.dylib 0x209224e2 _dispatch_call_block_and_release + 10
7 libdispatch.dylib 0x209224be _dispatch_client_callout + 6
8 libdispatch.dylib 0x2092228c _dispatch_main_queue_callback_4CF$VARIANT$up + 848
9 CoreFoundation 0x20ddef1e CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 10
10 CoreFoundation 0x20ddd1ee __CFRunLoopRun + 1486
11 CoreFoundation 0x20d31f74 CFRunLoopRunSpecific + 354
12 Foundation 0x2167307c -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 246
13 Foundation 0x216bff5a -[NSRunLoop(NSRunLoop) run] + 80
14 libxpc.dylib 0x20b630de _xpc_objc_main + 600
15 libxpc.dylib 0x20b646fe xpc_main + 166
16 Foundation 0x21847fea service_connection_handler + 0
17 PlugInKit 0x2aa031be -[PKService run] + 774
18 WatchKit 0x2e86ff8c main + 134
19 libdyld.dylib 0x20974566 start + 2

Thread 1:
0 libsystem_pthread.dylib 0x20b251ac start_wqthread + 0

Thread 2:
0 libsystem_pthread.dylib 0x20b251ac start_wqthread + 0

Thread 3:
0 libsystem_pthread.dylib 0x20b251ac start_wqthread + 0

Thread 4:
0 libsystem_kernel.dylib 0x20a67700 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x20b25634 _pthread_wqthread + 1116
2 libsystem_pthread.dylib 0x20b251b8 start_wqthread + 12

Thread 0 crashed with ARM Thread State (32-bit):
r0: 0x14577b00 r1: 0x00000002 r2: 0x00000000 r3: 0x000e9ba4
r4: 0x14577d60 r5: 0x14578180 r6: 0x14567740 r7: 0x00282a38
r8: 0x14577d60 r9: 0x00010001 r10: 0x14578180 r11: 0x351cbb40
ip: 0xffffffff sp: 0x002829f0 lr: 0x14539d00 pc: 0x000e82b0
cpsr: 0x20000010