# .mhd load failed error

**URL:** <https://discourse.slicer.org/t/mhd-load-failed-error/34352>\
**Category:** Support\
**Created:** [February 16, 2024, 2:13am UTC](https://discourse.slicer.org/t/mhd-load-failed-error/34352 "2024-02-16T02:13:10Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Payton\_Johnson](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/payton_johnson/32/69362_2.png) [@Payton\_Johnson](https://discourse.slicer.org/u/Payton_Johnson)\
**Post date:** [February 16, 2024, 2:13am UTC](https://discourse.slicer.org/t/mhd-load-failed-error/34352/1 "2024-02-16T02:13:10Z")

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I am trying to load data from an .mhd and .raw file set into Slicer 5.6.1. I keep getting an error notice that says the files failed to load. I have tried different versions of Slicer (5.6.0), different operating systems on different computers (macOs, windows), and different sets of files without a change in this error. Any idea what I am missing (extension, etc) that is required to be able to open these files?

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [February 16, 2024, 2:14am UTC](https://discourse.slicer.org/t/mhd-load-failed-error/34352/2 "2024-02-16T02:14:24Z")

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Can other software read this file?

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**Author:** ![jamesobutler](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jamesobutler/32/7511_2.png) [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Post date:** [February 16, 2024, 3:30am UTC](https://discourse.slicer.org/t/mhd-load-failed-error/34352/3 "2024-02-16T03:30:31Z")

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Have you by chance renamed the files? The mhd has a tag at the very bottom called `ElementDataFile` which specifies the name of the corresponding raw file.