Failed to load the fast_osc c-extension, falling back to pure Ruby version
Overriding fast_osc c-extension FastOsc::decode_single_message, falling back to pure Ruby version
C:/Program Files/Sonic Pi/app/server/ruby/vendor/sys-proctable-1.1.3/lib/windows/sys/proctable.rb:97: warning: constant ::Fixnum is deprecated
Are you certain this can’t be the reason why ??
because all ports are right opened …