[tor-bugs] #23064 [Applications/Tor Browser]: Tor doesn't open on OS X anymore

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#23064: Tor doesn't open on OS X anymore
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 Reporter:  nirvanaaaah               |          Owner:  tbb-team
     Type:  defect                    |         Status:  needs_information
 Priority:  Very High                 |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Blocker                   |     Resolution:
 Keywords:  tbb-crash                 |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by mcs):

 As far as I know, we have not received other bug reports like this one.
 One possibility is that there is an incompatibility with macOS 10.10.5.
 Unfortunately, I do not have access to a Mac that is running that OS.
 Another possibility is that even when McAfee is disabled, it interferes
 with Tor Browser and causes a crash. We have had reports of that kind of
 behavior on Windows with antivirus software; I am not sure about OSX.
 Would it be possible for you to uninstall McAfee temporarily?

 Also, the stack trace that you copied from you system's crash reporter
 does not seem to be accurate (e.g., functions such as
 `vpx_reset_mmx_state` are repeated a lot with large code offsets). I am
 not sure why it is not more accurate, but if you are willing to install a
 debugger such as lldb, you could try running Tor Browser under a debugger
 and see if we can get a better stack trace.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23064#comment:10>
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