I had Teamspeak 3.3.x (or 3.5.x not entirely sure) installed on my Mac with OS 10.11.6 El Capitan.
Now i tried to update to 3.5.5 with the integrated Teamspeak Updater, but the update crashed.
After the failed update i downloaded Teamspeak 3.5.5 from the Teamspeak Website, moved the App to my App folder (the old Teamspeak 3 App got overwritten) but it fails to launch and states:
This Version of Teamspeak requires at least Mac OS 11.12.
So i tried to downgrade and downloaded every single older 3.5 and 3.3 Version from the 4Players and Teamspeak FTP but none of them will run. The only Version i found that won
t give me this error was Teamspeak 3.2.x. But with this i cant connect to any server anymore.
My Teamspeak Client was just working fine 2 days ago. I was able to connect to servers and was definitely on a newer Version, but since the Update failed nothing seems to work in this regard right now.
BTW: Teamspeak 5 Beta is working just fine on the same System.