Hey, I had a quick look…
Without a project file or any warnings, it’s hard to say for sure, but it all looks fine.
Obviously checking the name is exactly the same is a good idea.
You can also double-click into the custom node, copy the contents back into the main graph and likely get more info on the failure.
Otherwise, there is an alternative node in Archi-Lab, ‘Views.SetViewTemplate’ (which requires a view template not a name) perhaps try with that? This post shows couple of methods for getting all the view templates Issue with Custom Node Behaviour there is also a custom node in RIE.
Hope that’s useful,
Mark