# Unable to run SimpleFilters

**URL:** <https://discourse.slicer.org/t/unable-to-run-simplefilters/15441>\
**Category:** Support\
**Created:** [January 10, 2021, 4:39pm UTC](https://discourse.slicer.org/t/unable-to-run-simplefilters/15441 "2021-01-10T16:39:12Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Michal\_Lenik](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/michal_lenik/32/9489_2.png) [@Michal\_Lenik](https://discourse.slicer.org/u/Michal_Lenik)\
**Post date:** [January 10, 2021, 4:39pm UTC](https://discourse.slicer.org/t/unable-to-run-simplefilters/15441/1 "2021-01-10T16:39:12Z")

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When I try to run Simple Filters the window shows only help&development system reported error that Simple Filters widget has no representation. Could I ask for help?

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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:** [January 10, 2021, 5:36pm UTC](https://discourse.slicer.org/t/unable-to-run-simplefilters/15441/2 "2021-01-10T17:36:40Z")

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It is probably because your username contain a special (non-ASCII) character. See more details here: [SimpleITK is not available on Windows if Slicer is installed in a path that contains special characters · Issue #5383 · Slicer/Slicer · GitHub](https://github.com/Slicer/Slicer/issues/5383#issuecomment-757512228)

For now, I would recommend to reinstall Slicer at the step you need to choose the install location choose a path that does not contain any special characters.

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**Author:** ![Michal\_Lenik](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/michal_lenik/32/9489_2.png) [@Michal\_Lenik](https://discourse.slicer.org/u/Michal_Lenik)\
**Post date:** [January 10, 2021, 5:41pm UTC](https://discourse.slicer.org/t/unable-to-run-simplefilters/15441/3 "2021-01-10T17:41:41Z")

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I didn’t create an account yet. At least no data in User settings is applied

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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:** [January 10, 2021, 5:52pm UTC](https://discourse.slicer.org/t/unable-to-run-simplefilters/15441/4 "2021-01-10T17:52:13Z")

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Does your OS (eg Windows, macOS, etc) username include the special character “ł” as in your name “Michał”?

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**Author:** ![Michal\_Lenik](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/michal_lenik/32/9489_2.png) [@Michal\_Lenik](https://discourse.slicer.org/u/Michal_Lenik)\
**Post date:** [January 10, 2021, 5:58pm UTC](https://discourse.slicer.org/t/unable-to-run-simplefilters/15441/5 "2021-01-10T17:58:57Z")

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I just changed it to “l” but default folder still has “ł”

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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:** [January 10, 2021, 6:06pm UTC](https://discourse.slicer.org/t/unable-to-run-simplefilters/15441/6 "2021-01-10T18:06:47Z")

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Changing the username will probably not change the already created profile path (because doing so could break already installed software). I would expect that other software will have problems with your profile folder containing special characters, so it could make sense to create a new user with a simple username. If the goal is to make Slicer work with minimum effort, you can install it in a different location (for example, c:\Slicer).