Q: Ableton 9.1 Crash on Startup (SIGSEGV)

Whenever I attempt to launch Ableton Live suite 9.1, it crashes on startup with a SIGSEGV. I don't make it out of the splash screen.

Splash screen appears, runs through everything, then asks if I want to recover work from a file (initial crash). I've tried answering yes and no, rebooting, quitting everything else and opening it, but nothing has worked so far. Crash report is always the same, and always is at the same address. Crash report posted at the end.

Relevant: I am running Yosemite right now, but I don't think that's the issue, since it opened properly previously.

Any help is appreciated!

==============================================

Process:               Live [720]

Path:                  /Applications/Ableton Live 9 Suite.app/Contents/MacOS/Live

Identifier:            com.ableton.live

Version:               9.1 [2013-10-29_12ff1bf872] (9.1 [2013-10-29_12ff1bf872])

Code Type:             X86-64 (Native)

Parent Process:        ??? [1]

Responsible:           Live [720]

User ID:               501

Date/Time:             2014-09-02 23:51:23.091 -0400

OS Version:            Mac OS X 10.10 (14A299l)

Report Version:        11

Anonymous UUID:        1EFB2509-BDBB-7978-B543-A88722DEE1C3

Time Awake Since Boot: 1400 seconds

Crashed Thread:        Unknown

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)

Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000098

Backtrace not available

Unknown thread crashed with X86 Thread State (64-bit):

  rax: 0x0000000000000000  rbx: 0x0000000000000000  rcx: 0x00007fff5fbfc554  rdx: 0x00007fff5fbfc6b8

  rdi: 0x00007fff5fbfc6b8  rsi: 0x0000000000000000  rbp: 0x00007fff5fbfc6f0  rsp: 0x00007fff5fbfc660

   r8: 0x0000000000000014   r9: 0xffffffffffffffec  r10: 0x00007fff5fbfc6b4  r11: 0x00007fff5fbfc558

  r12: 0x00007fff780d6244  r13: 0x0000000100b2b950  r14: 0x00007fff70000000  r15: 0x0000000000000000

  rip: 0x00007fff91268488  rfl: 0x0000000000010246  cr2: 0x0000000000000098

Logical CPU:     0

Error Code:      0x00000004

Trap Number:     14

Binary images description not available

External Modification Summary:

  Calls made by other processes targeting this process:

    task_for_pid: 1

    thread_create: 0

    thread_set_state: 0

  Calls made by this process:

    task_for_pid: 0

    thread_create: 0

    thread_set_state: 0

  Calls made by all processes on this machine:

    task_for_pid: 938

    thread_create: 0

    thread_set_state: 0