Following the recommendations of Maxim. the easisest way is to install Canopy (v1.7.4... with v2.1.3 I didnt manage). The open it and it will set a new Python environment. Afterwards add this lines to your .cshrc (before MDDnmr lines that remain unaffected)
setenv canopy /Users/you/Library/Enthought/Canopy_64bit
set path=( $canopy/User/bin $canopy/System/bin $path )
Then in termianl (csh) type qMDD and works without problems.