Hello,
I guess your firewall is blocking the new version of TE2006.
The easiest solution : install the game again, but in a new directory.
The hardest solution : go to find the settings of your Firewall, and reset or completely remove all the references to TE2006, so your firewall should ask u again if you want to let TE2006 access the Net the next time u'll start it.
And read this topic if u need more tips :
https://www.managames.com/Forum/ftopic877.php