Thanks for the quick support on the build. But the updated build didn't work for me and gave me a different error. I can't find libSDL on my computer to replace the one bundled as MrK suggested. The error message was very long, let me know if you want me to e-mail you the whole error. Anyways, here's the error for me:
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_INSTRUCTION (SIGILL)
Exception Codes: 0x0000000000000001, 0x0000000000000000
Application Specific Information:
/Users/mchin617/Desktop/OpenXcom.app/Contents/MacOS/OpenXcom
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 SupSuper.OpenXcom 0x00000001024ca6e4 _GLOBAL__I_a + 4
1 dyld 0x00007fff6cb89c2e ImageLoaderMachO::doModInitFunctions(ImageLoader::LinkContext const&) + 268
2 dyld 0x00007fff6cb89dba ImageLoaderMachO::doInitialization(ImageLoader::LinkContext const&) + 40
3 dyld 0x00007fff6cb86a62 ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int, ImageLoader::InitializerTimingList&) + 308
4 dyld 0x00007fff6cb868f6 ImageLoader::runInitializers(ImageLoader::LinkContext const&, ImageLoader::InitializerTimingList&) + 54
5 dyld 0x00007fff6cb7a1da dyld::initializeMainExecutable() + 189
6 dyld 0x00007fff6cb7d560 dyld::_main(macho_header const*, unsigned long, int, char const**, char const**, char const**, unsigned long*) + 2419
7 dyld 0x00007fff6cb7927b dyldbootstrap::start(macho_header const*, int, char const**, long, macho_header const*, unsigned long*) + 477
8 dyld 0x00007fff6cb7905e _dyld_start + 54
Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000001 rbx: 0x00000001024ca6e0 rcx: 0x00007fff5d9acd70 rdx: 0x00007fff5d9acd10
rdi: 0x0000000000000001 rsi: 0x00007fff5d9acd00 rbp: 0x00007fff5d9ab2f0 rsp: 0x00007fff5d9ab2f0
r8: 0x00007fff6cbac178 r9: 0x00007fff5d9ab200 r10: 0x00007fff92ac8543 r11: 0x00000001025aae21
r12: 0x000000000000001e r13: 0x00007fff6cbac0b0 r14: 0x00007fff6cbb2ed8 r15: 0x0000000102597578
rip: 0x00000001024ca6e4 rfl: 0x0000000000010246 cr2: 0x00000001024ca6e0
Logical CPU: 0
Error Code: 0x00000000
Trap Number: 6