As one of Vuo's developers, I work on Vuo's engine (the thing that makes compositions run), work on nodes, and write documentation. You'll see me on the forums answering people's questions about Vuo.
I've been developing apps and frameworks for several years (since I was in college). Pre-Vuo projects include Kineme Quartz Composer plugins, iOS apps for education, an app that analyzes photographs of tomato slices, and software to help people with disabilities use talking keyboards.
I enjoy using Vuo to make live music visuals. My hope for Vuo is that it will grow into a community of people of diverse backgrounds and identities making lots of different artistic, useful, unique, goofy, beautiful, crafty, wonderful compositions.
In case you're still having problems, another thing to try is to delete Vuo's cached files. Go to Finder (e.g. click on the Desktop), then go to the Go menu and hold down the Option key, and select the Library option that appears. Go to Library > Caches > org.vuo, find the folder corresponding to the Vuo version you have (probably 1.1.1), and throw it in the trash. Or you can trash the whole org.vuo folder. It will be regenerated the next time you run Vuo Editor.
"J’utilise la lumière et l’image comme matières premières dans mon travail de recherche et de création." ("I use light and image as raw materials in my work of research and creation.") This is how Xavier Boyaud — a self-taught visual artist, lighting designer, scenographer, and videographer — describes his work. Vuo is one of the tools that Xavier uses to sculpt light and image.
No, you don't need to have files in your Modules folder. I just thought that, if you did, one of them might be causing the problem.
Were you able to find the Console application? Are there any messages from Vuo? (You may have to click "Show Log List" if the left sidebar isn't already revealed, and click "All Messages" in that sidebar.)
Are you running low on disk space? Vuo 1.1.x can give a "Node outdated or broken" error if there's not enough disk space to run the composition.
@dthietala, you should be able to continue using Vuo 1.1.x with any compositions created in Vuo 0.9 through 1.1.x. If the compositions were created in earlier versions than Vuo 0.9, you may need to open them in Vuo 0.9 and save them before they can be used in Vuo 1.1.x.
Does the error message provide any information about which nodes are a problem?
Console is an application that comes with macOS. Just do a Spotlight search for "Console".
In Vuo, if you go to Tools > Open User Modules Folder and Tools > Open System Modules Folder, do you have any files in those folders? If so, try moving them out of those folders and restarting Vuo.