Console Error While Moving LoS Terrain Point

[pollux]

I'm not sure I can provide useful steps to reproduce on this. Perhaps the stack traces will be enough. I had drawn a medium sized LoS terrain piece. It had more vertices than I wanted so I deleted some. There was a little snarl of vertices that were all bunched up and I think maybe several on top of each other. I was trying to separate out that snarl and this console error popped up. I last ran FGU updater about 15 minutes ago.

[12/5/2019 9:37:22 PM] [NOTICE] Launcher scene starting.
[12/5/2019 9:37:27 PM] [NOTICE] Daily session backup created.
[12/5/2019 9:37:27 PM] [NOTICE] Spawning private server.
[12/5/2019 9:37:29 PM] [NOTICE] Connected to game server.
[12/5/2019 9:37:29 PM] [NOTICE] Launcher scene exiting.
[12/5/2019 9:37:29 PM] [NOTICE] Tabletop scene starting.
[12/5/2019 9:42:47 PM] [NOTICE] Campaign saved.
[12/5/2019 9:47:47 PM] [NOTICE] Campaign saved.
[12/5/2019 9:49:07 PM] [<color="red">ERROR</color>] MOUSE UPDATE: System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
  at System.ThrowHelper.ThrowArgumentOutOfRangeException (System.ExceptionArgument argument, System.ExceptionResource resource) [0x00029] in <1f0c1ef1ad524c38bbc5536809c46b48>:0 
  at System.ThrowHelper.ThrowArgumentOutOfRangeException () [0x00000] in <1f0c1ef1ad524c38bbc5536809c46b48>:0 
  at FG.OccluderRendererSegment.BuildMesh (System.Boolean HMMMICFDIIL) [0x002cd] in <86a9717a498247c5aea7ee79453dea68>:0 
  at FG.OccluderRenderer.MoveRenderPoint (IEHGCMCLKEL MLIIIMKICLN, System.Int32 BNJJBGAKCFO, System.Int32 LFPMNFEIDAF, ADOAPBIOMPK MNCHNNMHCMO) [0x00111] in <86a9717a498247c5aea7ee79453dea68>:0 
  at HLKOFLOHELI.MDKCAGALCMM (UnityEngine.Vector2 NHHHFBADNKL) [0x0011d] in <86a9717a498247c5aea7ee79453dea68>:0 
  at HLKOFLOHELI.OnDrag (UnityEngine.Vector2 NNGLIOEAHHG, UnityEngine.Vector2 EJAGMAINLDO) [0x00049] in <86a9717a498247c5aea7ee79453dea68>:0 
  at GOMNCHKILDL.JGPJFLPPBOK (UnityEngine.Vector2 GAGADLBIOCE, UnityEngine.Vector2 HEMPLBCFNHG) [0x0011f] in <86a9717a498247c5aea7ee79453dea68>:0 
  at GMGNGILAJHH.ReceiveDrag (UnityEngine.Vector2 GAGADLBIOCE, UnityEngine.Vector2 HEMPLBCFNHG) [0x0001b] in <86a9717a498247c5aea7ee79453dea68>:0 
  at OLLKAEIGMBE.ILJPNAHKHMC (UnityEngine.Vector2 HCHPCGDHIJJ) [0x00023] in <86a9717a498247c5aea7ee79453dea68>:0 
  at OLLKAEIGMBE.ILJPNAHKHMC () [0x0000e] in <86a9717a498247c5aea7ee79453dea68>:0 
  at OLLKAEIGMBE.HHMAMNMKPHE () [0x00037] in <86a9717a498247c5aea7ee79453dea68>:0 
  at FG.FGDesktop.OPONKNKANPL () [0x0000d] in <86a9717a498247c5aea7ee79453dea68>:0 
  at FG.FGDesktop.Update () [0x00032] in <86a9717a498247c5aea7ee79453dea68>:0 
[12/5/2019 9:49:08 PM] [<color="red">ERROR</color>] MOUSE UPDATE: System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
  at System.ThrowHelper.ThrowArgumentOutOfRangeException (System.ExceptionArgument argument, System.ExceptionResource resource) [0x00029] in <1f0c1ef1ad524c38bbc5536809c46b48>:0 
  at System.ThrowHelper.ThrowArgumentOutOfRangeException () [0x00000] in <1f0c1ef1ad524c38bbc5536809c46b48>:0 
  at FG.OccluderRendererSegment.BuildMesh (System.Boolean HMMMICFDIIL) [0x002cd] in <86a9717a498247c5aea7ee79453dea68>:0 
  at FG.OccluderRenderer.MoveRenderPoint (IEHGCMCLKEL MLIIIMKICLN, System.Int32 BNJJBGAKCFO, System.Int32 LFPMNFEIDAF, ADOAPBIOMPK MNCHNNMHCMO) [0x00111] in <86a9717a498247c5aea7ee79453dea68>:0 
  at HLKOFLOHELI.MDKCAGALCMM (UnityEngine.Vector2 NHHHFBADNKL) [0x0011d] in <86a9717a498247c5aea7ee79453dea68>:0 
  at HLKOFLOHELI.OnDrag (UnityEngine.Vector2 NNGLIOEAHHG, UnityEngine.Vector2 EJAGMAINLDO) [0x00049] in <86a9717a498247c5aea7ee79453dea68>:0 
  at GOMNCHKILDL.JGPJFLPPBOK (UnityEngine.Vector2 GAGADLBIOCE, UnityEngine.Vector2 HEMPLBCFNHG) [0x0011f] in <86a9717a498247c5aea7ee79453dea68>:0 
  at GMGNGILAJHH.ReceiveDrag (UnityEngine.Vector2 GAGADLBIOCE, UnityEngine.Vector2 HEMPLBCFNHG) [0x0001b] in <86a9717a498247c5aea7ee79453dea68>:0 
  at OLLKAEIGMBE.ILJPNAHKHMC (UnityEngine.Vector2 HCHPCGDHIJJ) [0x00023] in <86a9717a498247c5aea7ee79453dea68>:0 
  at OLLKAEIGMBE.ILJPNAHKHMC () [0x0000e] in <86a9717a498247c5aea7ee79453dea68>:0 
  at OLLKAEIGMBE.HHMAMNMKPHE () [0x00037] in <86a9717a498247c5aea7ee79453dea68>:0 
  at FG.FGDesktop.OPONKNKANPL () [0x0000d] in <86a9717a498247c5aea7ee79453dea68>:0 
  at FG.FGDesktop.Update () [0x00032] in <86a9717a498247c5aea7ee79453dea68>:0 

SNIP - A similar error repeats many times, but exceeds the maximum forum post length.

[12/5/2019 9:49:08 PM] [<color="red">ERROR</color>] MOUSE UPDATE: System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
  at System.ThrowHelper.ThrowArgumentOutOfRangeException (System.ExceptionArgument argument, System.ExceptionResource resource) [0x00029] in <1f0c1ef1ad524c38bbc5536809c46b48>:0 
  at System.ThrowHelper.ThrowArgumentOutOfRangeException () [0x00000] in <1f0c1ef1ad524c38bbc5536809c46b48>:0 
  at FG.OccluderRendererSegment.BuildMesh (System.Boolean HMMMICFDIIL) [0x002cd] in <86a9717a498247c5aea7ee79453dea68>:0 
  at FG.OccluderRenderer.MoveRenderPoint (IEHGCMCLKEL MLIIIMKICLN, System.Int32 BNJJBGAKCFO, System.Int32 LFPMNFEIDAF, ADOAPBIOMPK MNCHNNMHCMO) [0x00111] in <86a9717a498247c5aea7ee79453dea68>:0 
  at HLKOFLOHELI.MDKCAGALCMM (UnityEngine.Vector2 NHHHFBADNKL) [0x0011d] in <86a9717a498247c5aea7ee79453dea68>:0 
  at HLKOFLOHELI.OnDrag (UnityEngine.Vector2 NNGLIOEAHHG, UnityEngine.Vector2 EJAGMAINLDO) [0x00049] in <86a9717a498247c5aea7ee79453dea68>:0 
  at GOMNCHKILDL.JGPJFLPPBOK (UnityEngine.Vector2 GAGADLBIOCE, UnityEngine.Vector2 HEMPLBCFNHG) [0x0011f] in <86a9717a498247c5aea7ee79453dea68>:0 
  at GMGNGILAJHH.ReceiveDrag (UnityEngine.Vector2 GAGADLBIOCE, UnityEngine.Vector2 HEMPLBCFNHG) [0x0001b] in <86a9717a498247c5aea7ee79453dea68>:0 
  at OLLKAEIGMBE.ILJPNAHKHMC (UnityEngine.Vector2 HCHPCGDHIJJ) [0x00023] in <86a9717a498247c5aea7ee79453dea68>:0 
  at OLLKAEIGMBE.ILJPNAHKHMC () [0x0000e] in <86a9717a498247c5aea7ee79453dea68>:0 
  at OLLKAEIGMBE.HHMAMNMKPHE () [0x00037] in <86a9717a498247c5aea7ee79453dea68>:0 
  at FG.FGDesktop.OPONKNKANPL () [0x0000d] in <86a9717a498247c5aea7ee79453dea68>:0 
  at FG.FGDesktop.Update () [0x00032] in <86a9717a498247c5aea7ee79453dea68>:0

[Moon Wizard]

Thanks for reporting. I've filed as FGU-790.

Regards,
JPG