For anyone with a client crash on start.
We can not reproduce this yet but it could be that clearing the cache folder may fix the issue.
You can find the cache folder under following paths.
Windows
%appdata%/TS3client/cache
Linux
home/.ts3client/cache
Note:
You may get error about icons can not load or was not found when you connect to server.
This is not an issue with the client.
The server does not have file transfer enabled or the file transfer got blocked or the icons got deleted from the server. Please contact the server owner to get this solved.
If clearing cache works
Open “Tools → Settings → Security” and there enable to clear cache on exist.
We will release an update to fix this crash. Meanwhile use this temporary fix.