VOID_DataValue: Cycle backwards on right click.
VOID_DataValue: Cycle backwards on right click.

--- a/VOID_DataValue.cs
+++ b/VOID_DataValue.cs
@@ -154,7 +154,14 @@
 				{
 					float magLimit = Math.Max(magnitude, 6f);
 					magLimit = (float)Math.Ceiling(magLimit / 3f) * 3f;
-					digits = (ushort)((digits + 3) % (int)magLimit);
+					if (Event.current.button == 0)
+					{
+						digits = (ushort)((digits + 3) % (int)magLimit);
+					}
+					else if (Event.current.button == 1)
+					{
+						digits = (ushort)((digits - 3) % (int)magLimit);
+					}
 				}
 			}
 			else

--- a/VOID_VesselInfo.cs
+++ b/VOID_VesselInfo.cs
@@ -66,7 +66,9 @@
 			"DeltaV (Current Stage)",
 			delegate()
 			{
-				if (Engineer.VesselSimulator.SimManager.Instance.Stages == null)
+				if (Engineer.VesselSimulator.SimManager.Instance.Stages == null ||
+			    	Engineer.VesselSimulator.SimManager.Instance.Stages.Length <= Staging.lastStage
+			    )
 					return double.NaN;
 				return Engineer.VesselSimulator.SimManager.Instance.Stages[Staging.lastStage].deltaV;
 			},