We restrict our exposition of the download and installation to a minimum here. A detailed description is given in the MCTDH-X manual http://ultracold.org/data/manual.
The software can be downloaded from the repository using the command:
hg clone https://bitbucket.org/MCTDH-X/mctdh-x-release
The username and password for the repository can be obtained at http://ultracold.org/forum