Moved ActiveVessel check from UpdateModules to FixedUpdate
Moved ActiveVessel check from UpdateModules to FixedUpdate

--- a/KerbalEngineer/Flight/FlightEngineerCore.cs
+++ b/KerbalEngineer/Flight/FlightEngineerCore.cs
@@ -290,6 +290,9 @@
         /// </summary>
         private void FixedUpdate()
         {
+            if (FlightGlobals.ActiveVessel == null)
+                return;
+
             try
             {
                 SectionLibrary.FixedUpdate();
@@ -370,9 +373,6 @@
         /// </summary>
         private void UpdateModules()
         {
-            if (FlightGlobals.ActiveVessel == null)
-                return;
-
             try
             {
                 foreach (var updatable in this.UpdatableModules)