Error: PB invoked from parallel thread (logged only once)!
   at System.Environment.GetStackTrace(Exception e, Boolean needFileInfo)
   at System.Environment.get_StackTrace()
   at Sandbox.Game.Entities.Blocks.MyProgrammableBlock.RunSandboxedProgramAction(Action`1 action, String& response)
   at Sandbox.Game.Entities.Blocks.MyProgrammableBlock.UpdateStorage()
   at Sandbox.Game.Entities.Blocks.MyProgrammableBlock.GetObjectBuilderCubeBlock(Boolean copy)
   at Sandbox.Game.Entities.Cube.MySlimBlock.GetObjectBuilderInternal(Boolean copy)
   at Sandbox.Game.Entities.MyCubeGrid.GetObjectBuilderInternal(MyObjectBuilder_CubeGrid ob, Boolean copy)
   at Sandbox.Game.Entities.MyCubeGrid.GetObjectBuilder(Boolean copy)
   at NaniteConstructionSystem.Extensions.Conveyor.RebuildConveyorList(HashSet`1 entities)
   at NaniteConstructionSystem.Entities.NaniteConstructionInventory.RebuildConveyorList()
   at NaniteConstructionSystem.Entities.NaniteConstructionBlock.<ScanForTargets>b__47_0()
   at ParallelTasks.DelegateWork.DoWork(WorkData workData)
   at ParallelTasks.WorkItem.DoWork(Int32 expectedID)
   at ParallelTasks.BackgroundWorker.WorkLoop()
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)