# slicer not loading properly

**URL:** <https://discourse.slicer.org/t/slicer-not-loading-properly/2929>\
**Category:** Support\
**Created:** [May 25, 2018, 6:30am UTC](https://discourse.slicer.org/t/slicer-not-loading-properly/2929 "2018-05-25T06:30:39Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![bharat](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/bharat/32/8615_2.png) [@bharat](https://discourse.slicer.org/u/bharat)\
**Post date:** [May 25, 2018, 6:30am UTC](https://discourse.slicer.org/t/slicer-not-loading-properly/2929/1 "2018-05-25T06:30:39Z")

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Operating system:  
Slicer version: 4.8  
Expected behavior: running normal mode  
Actual behavior: running advanced mode  
The message detail is:

Exception thrown in event: d:\d\p\slicer-481-package\itkv4\modules\io\imagebase\include\itkImageFileReader.hxx:143:  
Could not create IO object for reading file C:/Users/HOME/Documents/SlicerDICOMDatabase/dicom/1.2.840.113619.2.278.3.2831191556.205.1459907380.468/1.2.840.113619.2.278.3.2831191556.205.1459907380.517/1.2.840.113619.2.278.3.2831191556.205.1459907380.518  
Tried to create one of the following:  
NiftiImageIO  
NrrdImageIO  
GiplImageIO  
JPEGImageIO  
GDCMImageIO  
BMPImageIO  
LSMImageIO  
PNGImageIO  
TIFFImageIO  
VTKImageIO  
StimulateImageIO  
BioRadImageIO  
MetaImageIO  
MRCImageIO  
MINCImageIO  
MGHImageIO  
MRMLIDImageIO  
You probably failed to set a file suffix, or  
set the suffix to an unsupported type.

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<div class="post-metadata">

**Author:** ![Andinet\_Enquobahrie](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/andinet_enquobahrie/32/75_2.png) [@Andinet\_Enquobahrie](https://discourse.slicer.org/u/Andinet_Enquobahrie)\
**Post date:** [May 25, 2018, 12:22pm UTC](https://discourse.slicer.org/t/slicer-not-loading-properly/2929/2 "2018-05-25T12:22:39Z")

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What is the file name extension of the data you are trying to load?

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<div class="post-metadata">

**Author:** ![cpinter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cpinter/32/7995_2.png) [@cpinter](https://discourse.slicer.org/u/cpinter)\
**Post date:** [May 25, 2018, 1:14pm UTC](https://discourse.slicer.org/t/slicer-not-loading-properly/2929/3 "2018-05-25T13:14:51Z")

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You need to use the DICOM browser to load DICOM data. You can open it using the “DCM” button right next to add data button on the toolbar. First you have to import the whole DICOM folder, then you can browse patient/study/series and load the selected datasets.

[https://www.slicer.org/wiki/Documentation/Nightly/Modules/DICOM](https://www.slicer.org/wiki/Documentation/Nightly/Modules/DICOM)