Version 5.01b1 worked fine.
Upgraded to 6.0b1 and crashes on opening. Crash Report says:
Thread 1 Crashed:: Dispatch queue: com.apple.network.connections
0 Network 0x1a09cc710 nw_frame_array_remove + 52
1 libnetworkextension.dylib 0x1ae5aeb28 __ne_filter_send_approved_frames_block_invoke + 108
2 Network 0x1a09cc758 nw_frame_array_foreach + 60
3 libnetworkextension.dylib 0x1ae5a9a48 ne_filter_send_approved_frames + 636
4 libnetworkextension.dylib 0x1ae5a7e68 ne_filter_process_verdict + 1124
5 libnetworkextension.dylib 0x1ae5a7930 __ne_filter_data_protocol_send_finished_block_invoke.48 + 272
6 libdispatch.dylib 0x1986e1978 _dispatch_call_block_and_release + 32
7 libdispatch.dylib 0x1986e36d8 _dispatch_client_callout + 20
8 libdispatch.dylib 0x1986ece00 _dispatch_workloop_invoke + 2124
9 libdispatch.dylib 0x1986f6838 _dispatch_root_queue_drain_deferred_wlh + 288
10 libdispatch.dylib 0x1986f6084 _dispatch_workloop_worker_thread + 532
11 libsystem_pthread.dylib 0x1988923d8 _pthread_wqthread + 288
12 libsystem_pthread.dylib 0x1988910f0 start_wqthread + 8
and:
Thread 1 crashed with ARM Thread State (64-bit):
x0: 0x000000068c1a8548 x1: 0x0000000000000001 x2: 0x000000068c8c3480 x3: 0xfffffffffffffff9
x4: 0x0000000000000000 x5: 0x0000000000000000 x6: 0x000000016f866410 x7: 0x0000000000000d80
x8: 0x000000068c8c34a0 x9: 0x0000000000000000 x10: 0x0000000000000000 x11: 0x000000000000002d
x12: 0x00000001987a7e89 x13: 0x0000000000000034 x14: 0x0000000100ee4750 x15: 0x000000000000001b
x16: 0x856b0001a09cc6dc x17: 0x0000000205d168d0 x18: 0x0000000000000000 x19: 0x0000000000000000
x20: 0x000000068c8c3480 x21: 0x000000016f866648 x22: 0x0000000000000000 x23: 0xffffffffffffffff
x24: 0x0000000000000000 x25: 0x0000000000000003 x26: 0x000000068c1a8548 x27: 0x000000068c019b80
x28: 0x00000001ae587000 fp: 0x000000016f866580 lr: 0x00000001ae5aeb28
sp: 0x000000016f8664a0 pc: 0x00000001a09cc710 cpsr: 0x00001000
far: 0x0000000000000000 esr: 0x92000046 (Data Abort) byte write Translation fault