# Label Map to Model-Export issue
**URL:** https://discourse.slicer.org/t/label-map-to-model-export-issue/9129
**Category:** Support
**Created:** [November 13, 2019, 12:50pm UTC](https://discourse.slicer.org/t/label-map-to-model-export-issue/9129 "2019-11-13T12:50:37Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Melodicpinpon](https://discourse.slicer.org/u/Melodicpinpon)
#### Post date: [November 13, 2019, 12:50pm UTC](https://discourse.slicer.org/t/label-map-to-model-export-issue/9129/1 "2019-11-13T12:50:37Z")
Goodafternoon from Montpellier, gentlemen,
I downloaded a dicom from Open anatomy (the one about the inner ear) saved it and opened it on my computer. The temporal bone model (it contains a bunch of models) is a bit rough/fat sothat I made a new ‘Structure’ (or is it a ‘Labelmap’?) through the ‘Editor’ module with the ‘Treshold’ tool and applied it.
As I would like to export an .stl from it, I chose the ‘MakeModelEffect’ tool and applied it but do not find any new model; I can only show the result of my ‘Ear-CT-bone-label’ in the ‘Volume Rendering’ module.
When I look within the ‘Surface Model’\>‘Model Maker’ module an error message tells me that:
ERROR: cannot open input volume file C:/Users/GAUTHI~1/AppData/Local/Temp/Slicer/DIGEI\_vtkMRMLLabelMapVolumeNodeE.nrrd
It is weird since the dicom is not saved in this folder, and that there is no ‘Slicer’ folder within C:/Users/GAUTHI~1/AppData/Local/Temp/
Thank you if you can help me with this one.
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### Author:  [@rkikinis](https://discourse.slicer.org/u/rkikinis)
#### Post date: [November 13, 2019, 1:30pm UTC](https://discourse.slicer.org/t/label-map-to-model-export-issue/9129/2 "2019-11-13T13:30:43Z")
Hi,
3D Slicer does not work with special characters in the path.try to put software and data in a location without the ~ character in the path.
I would recommend to use the segment editor, not the older interactive editor. There are tutorials on how to perform segmentations and output .stl files.
Best
Ron
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### Author:  [@Melodicpinpon](https://discourse.slicer.org/u/Melodicpinpon)
#### Post date: [November 13, 2019, 4:13pm UTC](https://discourse.slicer.org/t/label-map-to-model-export-issue/9129/3 "2019-11-13T16:13:47Z")
Thank you so much; I will do that. (I was wondering why there were two similar modules but followed an old tutorial).
The problem has been resolved through a change within
‘Welcome to 3D Slicer’ \>‘Customise 3D slicer’\>Modules\>Temporary directory.
It was pointing to a protected(unwritable) folder.
There was also a change to do in
‘Welcome to 3D Slicer’ \>‘Customise 3D slicer’\>Cache\>Cache size has been raised to 2000Mb
and CacheFreeBuffer lowered to 10Mb.