make sure you are using the correct version of dynamo for the script. what version are you running?
you need to upgrade it. i made the script in 1.3 or 2.0
hangers are not placing permanently when i select individual pipes. Means i re write the selection node as below.
thats made into dynamo that way. if you re run the script it will delete what was made before and then replace it. you need to use dynamo player if you dont want it to be erased.
dynamo player available only in revit 2019. right?
its available in 2017 and up, but you have to use 1.3 version of dynamo inn 2017. the ideal setup is 2018 revit and 2.0 dynamo
youll have to mess with the angle formula thats in there. Dynamo isnt always plug and play. there is some tinkering involved