Crash when entering an e-mail address?

Sometimes when I enter a new e-mail address which is not to be found in one of the carddav connected addressbooks (I have 6 of them), and whatever I try to do next after entering that e-mail address, the program crashes. Is this a known issue?

To be complete, when I add this address to one of the addressbooks, it works fine.

I have not seen this problem personally, but if you are not using the latest version of eM Client available at, you could download and install it, and see if there is any difference. 

Another thing you can try is to start eM Client with a blank database and after adding your accounts, see if there is any difference. To delete the database, close eM Client, and then rename C:\Users[username]\AppData\Roaming\eM Client. You may have to show hidden items in Explorer to do that.

Ok, I see the auto update didn’t mention the new version, even checking for the update didn’t. Installed the new version and I will monitor if it happens again. After that, I will delete the database.
Thanks for the answer!