We are about to switch to a new forum software. Until then we have removed the registration on this forum.
One significant change for the latest ruby-processing is that the 'watch mode' has been extended to monitor changes to glsl shader files (as well as ruby files of you sketch). See my blog for fuller explanation. This means if you edit the shader file, whilst it is running in the watch mode, it will get reloaded on save (which is about as good as it gets).