Vbap example crashes

crash.txt

ix $ ./run.sh allocore/examples/sound/vbap.cpp
RUN SCRIPT: Building file allocore/examples/sound/vbap.cpp.
Allosystem: GLV Library NOT found. Not building alloGLV.
Cuttlebone required to build AlloSphere. Not found!
Using AlloSystem Run facilties.
----Building /Users/ky/Teaching/MAT/201B/AlloSystem/allocore/examples/sound/vbap.cpp
Not building GLV and no usable GLV binary found. Not linking application to GLV
Not building alloGLV and no usable alloGLV binary found. Not linking application to alloGLV
Not building allocv and no usable allocv binary found. Not linking application to allocv
Not building allosphere and no usable allosphere binary found. Not linking application to allosphere
[  3%] Built target cuttlebone
[ 15%] Built target Gamma
[ 79%] Built target allocore
[ 88%] Built target alloaudio
[ 98%] Built target alloutil
[100%] Built target allocore_examples_sound_vbap
[100%] Running: allocore_examples_sound_vbap
/bin/sh: line 1: 28511 Segmentation fault: 11  /Users/ky/Teaching/MAT/201B/AlloSystem/build/bin/allocore_examples_sound_vbap
make[3]: *** [CMakeFiles/allocore_examples_sound_vbap_run] Error 139
make[2]: *** [CMakeFiles/allocore_examples_sound_vbap_run.dir/all] Error 2
make[1]: *** [CMakeFiles/allocore_examples_sound_vbap_run.dir/rule] Error 2
make: *** [allocore_examples_sound_vbap_run] Error 2

...

* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x68)
    frame #0: 0x0000000100044614 allocore_examples_sound_vbap`al::Vbap::makePhantomChannel(int, std::__1::vector<int, std::__1::allocator<int> >) + 20
allocore_examples_sound_vbap`al::Vbap::makePhantomChannel:
->  0x100044614 <+20>: movq   0x68(%r15), %rbx
    0x100044618 <+24>: testq  %rbx, %rbx
    0x10004461b <+27>: je     0x100044661               ; <+97>
    0x10004461d <+29>: leaq   0x68(%r15), %r14
Target 0: (allocore_examples_sound_vbap) stopped.
(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x68)
  * frame #0: 0x0000000100044614 allocore_examples_sound_vbap`al::Vbap::makePhantomChannel(int, std::__1::vector<int, std::__1::allocator<int> >) + 20
    frame #1: 0x0000000100008517 allocore_examples_sound_vbap`main + 1559
    frame #2: 0x00007fff55d47015 libdyld.dylib`start + 1
    frame #3: 0x00007fff55d47015 libdyld.dylib`start + 1