Installed proxychains 4.8 from http://sourceforge.net/projects/proxychains-ng/files
Had installed proxychains 3.1-3 from a repository earlier and got the same error message.
So I suspected it was something to do with TAILS1.2 itself.
I'm going to try to get the v3.1-3 working as its from a repository. The app has forked after that and isn't a repository app from that point on.
So app usage is
proxychains <prog> [args]
Error is below:
amnesia@amnesia:~$ proxychains firefox www.alexa.com
/usr/bin/proxychains: 9: exec: firefox: not found
Would appreciate any thought you have.
Should have been clearer, debian distro is TAILS1.2
appreciate your reply , will do some more research around working directory and shared objects.