Can you please paste in a C# node the code below?
Ideally both when getting the issue and when not, and we can try see what’s going on…
Also, what version of Rhino/Gh are you on?
using System.Linq;
A = AppDomain.CurrentDomain.GetAssemblies().Select(o => o.FullName).Where(o => o.Contains("Newtonsoft")).ToList();
