On Wednesday 18 December 2019 08.40:31 mb850063@... wrote:

> These are built and maintained by Sl�vek Banko. "
>
> If You make a apt-get update or upgrade (and thru the gui Synaptics, You
> get an error. This means there is a problem with the unofficial repository.

Did you install Slavek's version, or are you trying to update "regular" TDE 
with Slavek's version? I never tried the second option, but having the 
Premilimanry stable builds installed on Buster (clean install, not upgrade) I 
see not problem with apt-get update

Thierry