Hello,
I am using the latest release (5.1.0) and recast graphs.
Once I got this error, but I am not able to reproduce it.
Unity Debug Exception: "NullReferenceException: Object reference not set to an instance of an object"
Unity stacktrace: "Pathfinding.Poly2Tri.DTSweep.FlipEdgeEvent (Pathfinding.Poly2Tri.DTSweepContext tcx, Pathfinding.Poly2Tri.TriangulationPoint ep, Pathfinding.Poly2Tri.TriangulationPoint eq, Pathfinding.Poly2Tri.DelaunayTriangle t, Pathfinding.Poly2Tri.TriangulationPoint p) (at <07aca9e84ffe412bbfb50d0962eb64f2>:0)
Pathfinding.Poly2Tri.DTSweep.FlipEdgeEvent (Pathfinding.Poly2Tri.DTSweepContext tcx, Pathfinding.Poly2Tri.TriangulationPoint ep, Pathfinding.Poly2Tri.TriangulationPoint eq, Pathfinding.Poly2Tri.DelaunayTriangle t, Pathfinding.Poly2Tri.TriangulationPoint p) (at <07aca9e84ffe412bbfb50d0962eb64f2>:0)
Pathfinding.Poly2Tri.DTSweep.EdgeEvent (Pathfinding.Poly2Tri.DTSweepContext tcx, Pathfinding.Poly2Tri.TriangulationPoint ep, Pathfinding.Poly2Tri.TriangulationPoint eq, Pathfinding.Poly2Tri.DelaunayTriangle triangle, Pathfinding.Poly2Tri.TriangulationPoint point) (at <07aca9e84ffe412bbfb50d0962eb64f2>:0)
Pathfinding.Poly2Tri.DTSweep.EdgeEvent (Pathfinding.Poly2Tri.DTSweepContext tcx, Pathfinding.Poly2Tri.DTSweepConstraint edge, Pathfinding.Poly2Tri.AdvancingFrontNode node) (at <07aca9e84ffe412bbfb50d0962eb64f2>:0)
Pathfinding.Poly2Tri.DTSweep.Sweep (Pathfinding.Poly2Tri.DTSweepContext tcx) (at <07aca9e84ffe412bbfb50d0962eb64f2>:0)
Pathfinding.Poly2Tri.DTSweep.Triangulate (Pathfinding.Poly2Tri.DTSweepContext tcx) (at <07aca9e84ffe412bbfb50d0962eb64f2>:0)
Pathfinding.Poly2Tri.P2T.Triangulate (Pathfinding.Poly2Tri.TriangulationContext tcx) (at <07aca9e84ffe412bbfb50d0962eb64f2>:0)
Pathfinding.Poly2Tri.P2T.Triangulate (Pathfinding.Poly2Tri.TriangulationAlgorithm algorithm, Pathfinding.Poly2Tri.Triangulatable t) (at <07aca9e84ffe412bbfb50d0962eb64f2>:0)
Pathfinding.Poly2Tri.P2T.Triangulate (Pathfinding.Poly2Tri.Polygon p) (at <07aca9e84ffe412bbfb50d0962eb64f2>:0)
Pathfinding.Graphs.Navmesh.TileHandler.CutPoly (Pathfinding.Int3[] verts, System.Int32[] tris, System.UInt32[] tags, Pathfinding.Int3[] extraShape, Pathfinding.Util.GraphTransform graphTransform, Pathfinding.IntRect tiles, Pathfinding.Graphs.Navmesh.TileHandler+CutMode mode, System.Int32 perturbate) (at <b0a434184eb848ce88a68b3b4726ac31>:0)
Pathfinding.Graphs.Navmesh.TileHandler+<>c__DisplayClass42_0.<LoadTile>b__0 (Pathfinding.IWorkItemContext context, System.Boolean force) (at <b0a434184eb848ce88a68b3b4726ac31>:0)
Pathfinding.WorkItemProcessor.ProcessWorkItems (System.Boolean force, System.Boolean sendEvents) (at <b0a434184eb848ce88a68b3b4726ac31>:0)
Pathfinding.WorkItemProcessor.ProcessWorkItemsForUpdate (System.Boolean force) (at <b0a434184eb848ce88a68b3b4726ac31>:0)
AstarPath.PerformBlockingActions (System.Boolean force) (at <b0a434184eb848ce88a68b3b4726ac31>:0)
AstarPath.Update () (at <b0a434184eb848ce88a68b3b4726ac31>:0)