The red blocks mean you have missing packages ! you need to add some packages to your dynamo so the script can work ! The packages you need to install are Genius Loci and Bakery ! if you want help installing the packages just tell me !
Just installed the latest versions of those packages.
Can you provide screenshots in dynamo after running the script ?
Did it work for you ?
No, could we set up a web meeting to walk through it?
I think this is a version issue.
If you can see the category has changed.
@deejaypein has as category Pipes and Levels
You have other categories:
I alway use the Category.ByName node to fix this problem for ever, or you can just select the right categories 
Ok that worked. I am getting split pipes. Parallel risers are splitting at different floors, how should I resolve this?
Should I have received a meeting invite?
What do you want? Do you need to place a socket?
Great script,
unfortunately this doesn’t work for Fab Pipes 
but I was able to use your Plane at Level, I have a script that was placing a point were Pipes intersect floors, your place Point were Pipe intersects Plane works so much better.
thank you Sir.
Hi!
I really liked your post.
I tried to run your file, but I have problems.
Can you help me please?