get_tile_array_binary crash

[tingzhao]

Crashed Thread: 6

Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000

External Modification Warnings:
Debugger attached to process.

Application Specific Information:
*** error for object 0x103d4ed40: pointer being freed was not allocated

objc[53084]: garbage collection is OFF

Thread 0:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff9036bbca __psynch_cvwait + 10
1 libsystem_c.dylib 0x00007fff8a00f274 _pthread_cond_wait + 840
2 com.yourcompany.neuTube_d 0x000000010179ec0b boost::condition_variable::wait(boost::unique_lockboost::mutex&) + 155
3 libboost_thread-mt.dylib 0x0000000103c4783b boost::thread::join_noexcept() + 107
4 com.yourcompany.neuTube_d 0x000000010179f0e6 boost::thread_group::join_all() + 198
5 com.yourcompany.neuTube_d 0x00000001017983a2 libdvid::get_tile_array_binary(libdvid::DVIDNodeService&, std::string, libdvid::Slice2D, unsigned int, std::vector<std::vector<int, std::allocator >, std::allocator<std::vector<int, std::allocator > > > const&, int) + 1826