Just installed the latest v12 of TV on the Mac and it worked. I also installed the latest. It's too much trouble to update and have to downgrade again.

Hi all, thank you for all your messages. Could somebody that is experiencing this issue do the following: - Drag and drop the TeamViewer App in the trash and then empty the trash to uninstall TeamViewer - Please delete all the plist file of TeamViewer You will find this file under: Finder Home directory Library Preferences. Here, delete all plist entries of TeamViewer. Please also remove all entries starting with 'com.TeamViewer' from users USERNAME Libary Preferences Please note that on OS X Lion and later, the library folder is hidden. Here is a simple way to unhide the Library folder on the new Mac OSX Lion: 1) Open a terminal window 2) Type the following command: chflags nohidden /users/”username”/Library After doing this, you should be able to find the folder under the users directory. - Once deleted all the plist files download once again TeamViewer from here: and install it. Please let us know if this is working fine, Giovanni.

**Moderator Note: This has been marked as a solution so that it is easy to find and is a temporary solution. We will update this when the issue has been fully resolved** Hi all, Thank you so much for your contribution in this thread.

We already informed our development about the problem and they are already working on a solution. The problem occurs in the current TeamViewer 13 version.

If you encounter this problem, please use the following download link to install the previous version 13 for OSX: I will keep you updated on this. Mac app for vector autotrace. A big thank youto all of you and especially to the people who send me more information and the TeamViewer logfiles.