We had an issue before where our security app (SentinalOne) was causing revit to hard crash at start up. We were able to fix the issue but now we can not run our custom Dynamo scripts in our custom tool library. Not sure if this is still a problem with our security app or if this is a bug within the newest version.
The script will work when played through Dynamo, and the pushbutton will work in pyrevit if Dynamo is open, but once we close Dynamo, the script will not work. And this is only in 2027. Everything works fine in Revit 2026.