That's a common error when you try to run a script which requires an interpreter or shell that doesn't exist. If you open the file you will probably see that the first line is something like this:
This line tells the system that this is a cshell script, or more exactly - the program that the script should be interpreted with is /bin/csh. The most common shells on Linux are bash (/bin/bash) and the Bourne shell (/bin/sh). Other interpreters include perl and python, but those are not regular user shells but rather dedicated programming languages.
In order to get it working you need to install csh.