Quite a few users have reported crash issues in the latest Windows release of TeamTalk v5.2.2. The cause of this is still being investigated, so in the meantime please take the time to try out TeamTalk v184.108.40.20689 and help to find the cause. When TeamTalk v220.127.116.1189 crashes it will generate a .dmp file. Please send this file to firstname.lastname@example.org.
Download TeamTalk v18.104.22.16889 here.
To downgrade to a previous version of TeamTalk you can always look in the TeamTalk download archive: http://www.bearware.dk/teamtalk/