diff --git a/TBF/Rig/Sequences/SequenceBase.cs b/TBF/Rig/Sequences/SequenceBase.cs
index 277d43482..b84fceaa4 100644
--- a/TBF/Rig/Sequences/SequenceBase.cs
+++ b/TBF/Rig/Sequences/SequenceBase.cs
@@ -1586,7 +1586,7 @@ namespace TBF.Rig.Sequences
             tstRslt.EndTime = DateTime.Now + new TimeSpan(0, 0, 1);
             tstRslt.FlowSetTime = 10;
             tstRslt.TestTime = tstRslt.TargetTime();
-            if (outPath != null)
+            if (outPath != null && outPath.FlowMeter != null && outPath.Scale != null)
             {
                 tstRslt.PulsesMaster = (outPath.FlowMeter.LtrPerPulse > 1E-6) ? (1.0075 * tstRslt.TargetVolume() / outPath.FlowMeter.LtrPerPulse) : 1;
                 tstRslt.MassStartRaw = 0;