On my DX, I need to run these in the background, or they quit when my telnet connection drops with "Connection closed by foreign host." error (common on long telnet connections to kindles -- ssh is more reliable).
For example,
/mnt/us/dithermatron &
/mnt/us/eLips &
/mnt/us/cosmegg &
That way it keeps running to completion even after my telnet connection drops. 
And it helps a LOT to clear the screen before running these:
eips -c ==> this works on any eink kindle.
eips -c -f ==> on K4(mini) or K5(touch), display looks much cleaner with '-f'.
Enjoy and learn! 
