Hi Rosalia, Seems that you somehow removed also the tcl package when you had your previous installation troubles. Try: ' sudo apt-get install tcl' I hope this will solve the problem, wolf On 01/09/14 08:33, Rosalia Dacosta Aguayo wrote: > Dear FSL experts, > > I am trying to run Melodic as usual, with the new FSL version... > > After loading my .fsf text file....I click to run and it appears the > following error in my shell: > > rosalia@rosalia-PORTEGE-Z930:~ > $ cd /home/rosalia/Desktop/MELODIC_ESPECTRO > rosalia@rosalia-PORTEGE-Z930:~/Desktop/MELODIC_ESPECTRO$ fsl > */usr/share/fsl/5.0/bin/feat: 74: exec: /usr/bin/tclsh: not found* > > > I would greatly appreciate if you could tell me what is happening and > how to fix this problem. > > Thank you in advance, > Rosalia.