# Error during radiotherapy dose calculation

**URL:** <https://discourse.slicer.org/t/error-during-radiotherapy-dose-calculation/5579>\
**Category:** Support\
**Created:** [January 30, 2019, 11:14am UTC](https://discourse.slicer.org/t/error-during-radiotherapy-dose-calculation/5579 "2019-01-30T11:14:19Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![PaoloZaffino](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/paolozaffino/32/81052_2.png) [@PaoloZaffino](https://discourse.slicer.org/u/PaoloZaffino)\
**Post date:** [January 30, 2019, 11:14am UTC](https://discourse.slicer.org/t/error-during-radiotherapy-dose-calculation/5579/1 "2019-01-30T11:14:19Z")

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Hi all,  
I got an error during radiotherapy dose calculation.  
I tried on mac and linux, Slicer 4.10.0 and Slicer 4.10.1.

In the error log I see: “Unable to inizialize RTplan”.  
If you want I can provide a toy example (it’s a phantom, so no patients’ data).

Thanks a lot!

Paolo

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**Author:** ![gcsharp](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/gcsharp/32/863_2.png) [@gcsharp](https://discourse.slicer.org/u/gcsharp)\
**Post date:** [February 5, 2019, 5:51pm UTC](https://discourse.slicer.org/t/error-during-radiotherapy-dose-calculation/5579/2 "2019-02-05T17:51:55Z")

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Hi Paolo,  
Yes, please do so. I couldn’t reproduce the trouble here.  
Greg

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**Author:** ![PaoloZaffino](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/paolozaffino/32/81052_2.png) [@PaoloZaffino](https://discourse.slicer.org/u/PaoloZaffino)\
**Post date:** [February 5, 2019, 6:26pm UTC](https://discourse.slicer.org/t/error-during-radiotherapy-dose-calculation/5579/3 "2019-02-05T18:26:54Z")

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Thanks a lot @gcsharp!

This is the link:  
[RT toy example](https://drive.google.com/file/d/1m1dOPa0trkXQ1zussUEJOBrzSY4PmqE7/view?usp=sharing)

Paolo