### Author:  [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)
#### Post date: [July 21, 2022, 5:29pm UTC](https://discourse.slicer.org/t/new-3d-slicer-extension-for-planning-and-surgical-guide-generation-for-mandibular-bone-reconstruction/17638/6 "2022-07-21T17:29:33Z")
Finally we tracked down the real reason of the bug that made Slicer crash sometimes while creating cylinders or miterBoxes…
>
>
> \## Summary
> BoneReconstructionPlanner crashes 70% of the time while using vtkTub…eFilter (in the latter part of the workflow).
>
> Previously these kind of messages have appeared:
> \`\`\`
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2AC40A620)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2AC40A520) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2ACBE2960)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2ACBE5060) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2AB3176F0)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2AB3170F0) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2AC40A620)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2AC40A520) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2ACBE2960)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2ACBE5060) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2AB3176F0)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2AB3170F0) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2AC40A620)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2AC40A520) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2ACBE2960)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2ACBE5060) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2AB3176F0)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2AB3170F0) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2AC40A620)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2AC40A520) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2ACBE2960)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2ACBE5060) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2AB3176F0)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2AB3170F0) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2AC40A620)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2AC40A520) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2ACBE2960)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2ACBE5060) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2AB3176F0)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2AB3170F0) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2AC40A620)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2AC40A520) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2ACBE2960)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2ACBE5060) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2AB3176F0)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2AB3170F0) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2AC40A620)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2AC40A520) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2ACBE2960)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2ACBE5060) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2AB3176F0)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2AB3170F0) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2AC40A620)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2AC40A520) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2ACBE2960)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2ACBE5060) has 0 connections but is not optional.
> \[ERROR\]\[VTK\] 17.07.2022 19:48:27 \[vtkCompositeDataPipeline (000001F2AB3176F0)\] (D:\\D\\P\\S-0-build\\VTK\\Common\\ExecutionModel\\vtkDemandDrivenPipeline.cxx:668) - Input port 0 of algorithm vtkTubeFilter(000001F2AB3170F0) has 0 connections but is not optional.
> \`\`\`
>
> The number of different memory directions matches the quantity of mandiblePlanes that are being observed. The error appears to print one per 3D view render. If you set the plane locked, that plane doesn't produce this error any more.
>
> \## Steps to reproduce
>
> 1. Follow BoneReconstructionPlanner tutorial till you have a mandible reconstruction simulation achieved. (Takes 15minutes or 5minutes if you already did the segmentations)
> 2. Look at the error log (those error will be there)
> 3. If you go on with the workflow, later when you have to use some cylinders (vtkTubes) Slicer has 70% probability of crashing. Losing all the surgical planning that wasn't saved.
>
> \## Expected behavior
>
> Slicer does not crash
>
> \## Related
>
> https://discourse.slicer.org/t/error-vtk-input-port-0-of-algorithm-vtktubefilter-has-0-connections-but-is-not-optional/22153/3
>
> \## Environment
> \- Slicer version: Slicer built today with current source (5.1.0 2022/07/08)
> \- Operating system: Windows 10
>
> \## Proposed reason
>
> https://github.com/Slicer/Slicer/blob/57a9ad15f4948bda3698c9b57d56aa7abe07e97e/Modules/Loadable/Markups/VTKWidgets/vtkSlicerPlaneRepresentation3D.h#L92
>
> https://github.com/Slicer/Slicer/blob/57a9ad15f4948bda3698c9b57d56aa7abe07e97e/Modules/Loadable/Markups/VTKWidgets/vtkSlicerPlaneRepresentation3D.cxx#L248-L251
>
> Inside other function of the class:
>
> https://github.com/Slicer/Slicer/blob/57a9ad15f4948bda3698c9b57d56aa7abe07e97e/Modules/Loadable/Markups/VTKWidgets/vtkSlicerPlaneRepresentation3D.cxx#L494
>
> \## Solution
>
> https://github.com/Slicer/Slicer/pull/6468
>
> \## Additional info
>
> I couldn't do backtrace analisys with Slicer in "debug mode" or in "release mode with debug info" on Visual Studio 2019. Slicer wouldn't launch saying there is some CTK .dll missing
I’m sure users will be glad to know this is now really fixed
---
### Author:  [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)
#### Post date: [October 9, 2022, 9:21pm UTC](https://discourse.slicer.org/t/new-3d-slicer-extension-for-planning-and-surgical-guide-generation-for-mandibular-bone-reconstruction/17638/7 "2022-10-09T21:21:48Z")
> [@mau\_igna\_06](#):
>
> Finally we tracked down the real reason of the bug that made Slicer crash sometimes while creating cylinders or miterBoxes…
There was another bug on Slicer ([tracked here](https://github.com/Slicer/Slicer/issues/6570)) that made the crash happen and it will be solved soon since we found a way to make it reproducible.
The BRP team
---
### Author:  [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)
#### Post date: [December 3, 2022, 12:21am UTC](https://discourse.slicer.org/t/new-3d-slicer-extension-for-planning-and-surgical-guide-generation-for-mandibular-bone-reconstruction/17638/8 "2022-12-03T00:21:12Z")
On the next weekends, since I do this ad-honorem, I’ll be creating BoneReconstructionPlanner self-tests that will allow other developers to maintain and improve this extension.
---
### Author:  [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)
#### Post date: [December 15, 2022, 7:21pm UTC](https://discourse.slicer.org/t/new-3d-slicer-extension-for-planning-and-surgical-guide-generation-for-mandibular-bone-reconstruction/17638/9 "2022-12-15T19:21:02Z")
The tests development for BoneReconstructionPlanner is moving forward.
Here is video of a Virtual Surgical Planning workflow for mandible reconstruction:
[https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/4/f/4fb85e3e487415e35fd3a2439af26baa789e09c9.mp4](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/4/f/4fb85e3e487415e35fd3a2439af26baa789e09c9.mp4)
Soon, probably, there will be tests for anatomical surgical guide creation also.
Best wishes,
MScEng Mauro I. Dominguez
---
### Author:  [@francesca\_flore](https://discourse.slicer.org/u/francesca_flore)
#### Post date: [November 17, 2023, 12:11pm UTC](https://discourse.slicer.org/t/new-3d-slicer-extension-for-planning-and-surgical-guide-generation-for-mandibular-bone-reconstruction/17638/10 "2023-11-17T12:11:57Z")
Hi!! I have problem with this plug in. I tried with different PCs but 3D slicer crashes when I use the plug-in. Any ideas? It would be very useful to be able to use it. Thanks.
---
### Author:  [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)
#### Post date: [November 17, 2023, 1:13pm UTC](https://discourse.slicer.org/t/new-3d-slicer-extension-for-planning-and-surgical-guide-generation-for-mandibular-bone-reconstruction/17638/11 "2023-11-17T13:13:15Z")
Hi.
I just made a Virtual Surgical Plan and could create the reconstructed neomandible and the fibula surgical guide yesterday. Be sure to be using “Slicer 5.2.2 Stable” release.
I’ll finish my planning today making the mandible surgical guide but I’m not expecting to find any problems. I did not experience any crash.
Please follow [this instructions](https://github.com/SlicerIGT/SlicerBoneReconstructionPlanner#instructions) and report where you get the crash or you get stuck. Then I can help further.
---
### Author:  [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)
#### Post date: [November 18, 2023, 1:34pm UTC](https://discourse.slicer.org/t/new-3d-slicer-extension-for-planning-and-surgical-guide-generation-for-mandibular-bone-reconstruction/17638/12 "2023-11-18T13:34:18Z")
> [@mau\_igna\_06](#):
>
> I’ll finish my planning today making the mandible surgical guide but I’m not expecting to find any problems. I did not experience any crash.
I could finish the mandible surgical guide yesterday without problems
---
### Author:  [@francesca\_flore](https://discourse.slicer.org/u/francesca_flore)
#### Post date: [November 20, 2023, 2:57pm UTC](https://discourse.slicer.org/t/new-3d-slicer-extension-for-planning-and-surgical-guide-generation-for-mandibular-bone-reconstruction/17638/13 "2023-11-20T14:57:18Z")
Hi!! I uninstalled and reinstalled version 5.2.2 and it worked without any problems! Thank you very much for helping!!
---
### Author:  [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)
#### Post date: [November 20, 2023, 3:16pm UTC](https://discourse.slicer.org/t/new-3d-slicer-extension-for-planning-and-surgical-guide-generation-for-mandibular-bone-reconstruction/17638/14 "2023-11-20T15:16:22Z")
Hi
Do you mean you could finish the virtual surgical planning and export the neomandible and personalized surgical guides by following the [instructions](https://github.com/SlicerIGT/SlicerBoneReconstructionPlanner#instructions) by yourself?
EDIT: @francesca_flore liked this comment so most probably she got it working
---
### Author:  [@francesca\_flore](https://discourse.slicer.org/u/francesca_flore)
#### Post date: [November 20, 2023, 3:24pm UTC](https://discourse.slicer.org/t/new-3d-slicer-extension-for-planning-and-surgical-guide-generation-for-mandibular-bone-reconstruction/17638/15 "2023-11-20T15:24:13Z")
Right! But it doesn’t work with subsequent versions… I have tried with 5.4.0 and 5.5.0
---
### Author:  [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)
#### Post date: [November 20, 2023, 3:37pm UTC](https://discourse.slicer.org/t/new-3d-slicer-extension-for-planning-and-surgical-guide-generation-for-mandibular-bone-reconstruction/17638/16 "2023-11-20T15:37:20Z")
Good to know. Thanks
This would be solved in future
---
### Author:  [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)
#### Post date: [January 5, 2024, 8:59pm UTC](https://discourse.slicer.org/t/new-3d-slicer-extension-for-planning-and-surgical-guide-generation-for-mandibular-bone-reconstruction/17638/17 "2024-01-05T20:59:47Z")
> [@francesca\_flore](#):
>
> Right! But it doesn’t work with subsequent versions… I have tried with 5.4.0 and 5.5.0
Since the commit below all appears working for me now on Slicer 5.6.1
>
>
> BUG: increase point density of surgical guide objects to decrease chance of fail…ing boolean operations;
> BUG: correct very unrealistic shading of surgical guide boxes
Please report if not
Mauro
---
### Author:  [@Nolan\_Bennett](https://discourse.slicer.org/u/Nolan_Bennett)
#### Post date: [March 4, 2024, 4:43pm UTC](https://discourse.slicer.org/t/new-3d-slicer-extension-for-planning-and-surgical-guide-generation-for-mandibular-bone-reconstruction/17638/18 "2024-03-04T16:43:11Z")
I’ve been using this extension on 5.6.1 and it seems to crash every time I perform the boolean operation. I’ve tried deleting and re-installing, same problem.
---
### Author:  [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)
#### Post date: [March 4, 2024, 4:46pm UTC](https://discourse.slicer.org/t/new-3d-slicer-extension-for-planning-and-surgical-guide-generation-for-mandibular-bone-reconstruction/17638/19 "2024-03-04T16:46:57Z")
If you can provide a video showing what happens and zipped file with a Slicer scene to reproduce the problem I’ll be able to fix it
---
### Author:  [@Nolan\_Bennett](https://discourse.slicer.org/u/Nolan_Bennett)
#### Post date: [March 4, 2024, 11:40pm UTC](https://discourse.slicer.org/t/new-3d-slicer-extension-for-planning-and-surgical-guide-generation-for-mandibular-bone-reconstruction/17638/20 "2024-03-04T23:40:55Z")
Thank you for the timely response!
I can send a video but it does not show much, I’ve been following the tutorial in the README and have done everything up to the boolean operation for the fibula guide base. Slicer stops responding as soon as I click it. I have gotten it to run on slicer 5.2.2, but the boolean operation fails instead of crashing the program. I have a link to my zipped file
[Nolan Bennett Cutting Guide Test.zip](https://uofnorthflorida-my.sharepoint.com/:u:/r/personal/n01449813_unf_edu/Documents/Spring%2024/Nolan%20Bennett%20Cutting%20Guide%20Test.zip?csf=1&web=1&e=9EkfUP)
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