Failure running Overtone and SuperCollider

Question

I can't get overtone to work with supercollider server, I'm following the getting started guide at https://github.com/overtone/overtone/wiki/Getting-Started, I've got Jack audio server running through qjackctl, then I ran SuperCollider with scsynth -u 8888 which produced the following output:

Found 12 LADSPA plugins
JackDriver: client name is 'SuperCollider'
SC_AudioDriver: sample rate = 48000.000000, driver's block size = 1024
SuperCollider 3 server ready.
Zeroconf: registered service 'SuperCollider'

then in the clojure repl I connect to SC server:

(connect-external-server 8888)

then when I run (definst foo [] (saw 220)) I get the following error:

CompilerException java.util.concurrent.TimeoutException: deref! timeout 
error. Dereference took longer than 5000 ms whilst blocking until the 
following node has completed loading: #<synth-group[loading]: Inst foo 
Container 41>, compiling:(form-init1483192646581877285.clj:131:7) 

and scsynth outputs FAILURE IN SERVER /g_new Group 31 not found also if I try (demo (sin-osc)) I get the error FAILURE IN SERVER /s_new Group 7 not found although if I run using sclang:

s.boot;
{ SinOsc.ar(440, 0, 0.2) }.play;

it does produce a sound. I'm running Manjaro Linux using the Linux 4.9.27 real time Manjaro kernel and an HDA Intel PCH sound card.