diff --git a/.gitignore b/.gitignore
index 2946d78..46cc792 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,5 +20,6 @@
 # Unity3D Generated File On Crash Reports
 sysinfo.txt
 
+/Examples/
 README.md.meta
 LICENSE.md.meta
diff --git a/Scripts/Node.cs b/Scripts/Node.cs
index c1883d3..d65fc03 100644
--- a/Scripts/Node.cs
+++ b/Scripts/Node.cs
@@ -124,7 +124,8 @@ namespace XNode {
         /// <summary> Removes all instance ports from the node </summary>
         [ContextMenu("Clear instance ports")]
         public void ClearInstancePorts() {
-            foreach (NodePort port in InstancePorts) {
+            List<NodePort> instancePorts = new List<NodePort>(InstancePorts);
+            foreach (NodePort port in instancePorts) {
                 RemoveInstancePort(port);
             }
         }