[PlanetCCRMA] SC stopped working

[dominic]

Supercollider has stopped working for me 

on using the 4 beeps example when i place the cursor on

s = Server.local.boot;

and evaluate line

I get

booting 57110
a Server
sh: ./scsynth: No such file or directory
RESULT = 32512
ERROR:
server failed to start

is this a standard error? jack is running (although i am using my laptop
soundcard profile instead of my multiface)

I am thinking i might have messed something up building SCUM

dominic