Any Windows user with a crash on connect:
Anyone with a crash please give us some details. Unfortunately this does not happen for me.
Which operation system do you use?
Is this the 32 or 64 bit client in case it happens on Windows?
Which sound card / sound device do you use?
Please give the last client log.
On windows the path is:
%AppData%\TS3Client\logs
Mac OS
~/Library/Application Support/TeamSpeak 3/logs
Linux
~/.ts3client/logs
If you have a crashdump please share it and you may try the -safemode
as described below.
What you can do then is to downgrade back to 3.5.6 and ignore the update for now.
http://files.teamspeak-services.com/releases/client/3.5.6/