Handling exceptions thrown at any point during coroutine update, not just at Coroutine.MoveNext, dirty workaround for a (rare?) pathfinding bug I haven't been able to reproduce

Subsurface/Source/Characters/AI/PathFinder.cs

@@ -346,6 +346,14 @@ namespace Barotrauma
             {
                 finalPath.Add(pathNode.Waypoint);
 
+                //there was one bug report that seems to have been caused by this loop never terminating:
+                //couldn't reproduce or figure out what caused it, but here's a workaround that prevents the game from crashing in case it happens again
+                if (finalPath.Count > nodes.Count)
+                {
+                    DebugConsole.ThrowError("Pathfinding error: constructing final path failed");
+                    return new SteeringPath(true);
+                }
+
                 path.Cost += pathNode.F;
                 pathNode = pathNode.Parent;
             }

Subsurface/Source/CoroutineManager.cs

@@ -64,6 +64,8 @@ namespace Barotrauma
             DeltaTime = deltaTime;
 
             for (int i = Coroutines.Count-1; i>=0; i--)
+            {
+                try
                 {
                     if (Coroutines[i].Coroutine.Current != null)
                     {
@@ -86,21 +88,19 @@ namespace Barotrauma
                         }
                     }
 
-                //try
-                //{
                     Coroutines[i].Coroutine.MoveNext();
-                //}
+                }
 
-                //catch (Exception e)
+                catch (Exception e)
-                //{
+                {
-                //    DebugConsole.ThrowError("Coroutine " + Coroutines[i].Name + " threw an exception: " + e.Message);
+                    DebugConsole.ThrowError("Coroutine " + Coroutines[i].Name + " threw an exception: " + e.Message);
 
 //#if DEBUG
 //                    throw e;
 //#endif
 
-//                    Coroutines.RemoveAt(i);
+                    Coroutines.RemoveAt(i);
-//                }
+                }
 
             }
         }

Subsurface/Source/Map/LinkedSubmarine.cs

@@ -318,8 +318,8 @@ namespace Barotrauma
 
                 if (leaveBehind)
                 {
-                    saveElement.Add(new XAttribute("location", Level.Loaded.Seed));
+                    saveElement.SetAttributeValue("location", Level.Loaded.Seed);
-                    saveElement.Add(new XAttribute("worldpos", ToolBox.Vector2ToString(sub.SubBody.Position)));
+                    saveElement.SetAttributeValue("worldpos", ToolBox.Vector2ToString(sub.SubBody.Position));
 
                 }
                 else 
@@ -328,8 +328,7 @@ namespace Barotrauma
                     if (saveElement.Attribute("worldpos") != null) saveElement.Attribute("worldpos").Remove();
                 }                            
 
-                if (saveElement.Attribute("pos") != null) saveElement.Attribute("pos").Remove();
+                saveElement.SetAttributeValue("pos", ToolBox.Vector2ToString(Position - Submarine.HiddenSubPosition));
-                saveElement.Add(new XAttribute("pos", ToolBox.Vector2ToString(Position - Submarine.HiddenSubPosition)));
             }