No "out-of-the-box"

Hello. I installed Ubuntu with TDE environment, but the manager software was absent. So I managed to install, but now says I have no privileges to run. How to solve it? I've never seen it before on a distro. Another problem is that these same errors occur when trying to install a .deb package. There is not bound program to perform the installation. I would like to use the TDE as my default environment, but I am finding these obstacles. Because there is no TDE distros that came with software managers like the Ubuntu one. I'm not talking about Synaptic, which many softwares is missing. I have installed the TDE on SolidX distro, but it is buggy, and always lose the saved session. Which distro you recommend me that works out of the box, with TDE environment? It would be possible to install TDE in Mint Debian Edition? I do not want to use RPM-based distros. Thanks in advance. By the way, the ISO image called "tde-ubuntu-4.14-desktop-latest-amd64.iso" found in http://tde-mirror.yosemite.net/trinity/cdimages/ubuntu/ is wrong. Its environment is the Ubuntu Unity. I lost a cd media with this deception!