# VIZ Fails with User Library Import; Tom Sawyer is Fine

**URL:** <https://forum.sensmetry.com/t/viz-fails-with-user-library-import-tom-sawyer-is-fine/561>\
**Category:** Bug Reports\
**Tags:** resolved, modeler\
**Created:** [August 19, 2026, 4:15pm UTC](https://forum.sensmetry.com/t/viz-fails-with-user-library-import-tom-sawyer-is-fine/561 "2026-08-19T16:15:58Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![DavidHetherington](https://yyz2.discourse-cdn.com/flex008/user_avatar/forum.sensmetry.com/davidhetherington/32/347_2.png) [@DavidHetherington](https://forum.sensmetry.com/u/DavidHetherington)\
**Post date:** [August 19, 2026, 4:15pm UTC](https://forum.sensmetry.com/t/viz-fails-with-user-library-import-tom-sawyer-is-fine/561/1 "2026-08-19T16:15:58Z")

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VIZ fails at rendering when a user library is imported. I have created a very simple test case, a library with one part def, and a model that imports that library, defines one part usage and one view. SysIDE shows “no errors in the workspace” (both \*.sysml files). Tom Sawyer renders the view without issues. VIZ fails, unable to find the imported namespace.

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**Author:** ![DavidHetherington](https://yyz2.discourse-cdn.com/flex008/user_avatar/forum.sensmetry.com/davidhetherington/32/347_2.png) [@DavidHetherington](https://forum.sensmetry.com/u/DavidHetherington)\
**Post date:** [August 19, 2026, 4:17pm UTC](https://forum.sensmetry.com/t/viz-fails-with-user-library-import-tom-sawyer-is-fine/561/2 "2026-08-19T16:17:45Z")

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![2026-08-19_11-10-57 - VIZ fails with User Library Import](https://canada1.discourse-cdn.com/flex008/uploads/syside/original/1X/9bd3ad3b2395402b7149f529575678090eae0e37.png)

 ![Test-2000-User-Library-Tom-Sawyer](https://canada1.discourse-cdn.com/flex008/uploads/syside/original/1X/703375f14f2e3443e12bb1d5e2e5eb58a263bbf1.svg)

[Test-2000-User-Library.sysml](https://forum.sensmetry.com/uploads/short-url/npdxtFOiRu2T9Nwq3HaaUzwNU0q.sysml) (795 Bytes)

[MyTestLibrary.sysml](https://forum.sensmetry.com/uploads/short-url/2oFfZ7uMkCH2ysRrDphRT9XNXxZ.sysml) (604 Bytes)

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**Author:** ![DavidHetherington](https://yyz2.discourse-cdn.com/flex008/user_avatar/forum.sensmetry.com/davidhetherington/32/347_2.png) [@DavidHetherington](https://forum.sensmetry.com/u/DavidHetherington)\
**Post date:** [August 19, 2026, 4:29pm UTC](https://forum.sensmetry.com/t/viz-fails-with-user-library-import-tom-sawyer-is-fine/561/3 "2026-08-19T16:29:20Z")

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The Forum will not allow me to upload the PowerShell script I used to invoke VIZ. Here is the command line:

syside viz view Test-2000-User-Library.sysml --name “T2000UL::MySys::ShowToaster” -o diagrams

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**Author:** ![Simonas](https://yyz2.discourse-cdn.com/flex008/user_avatar/forum.sensmetry.com/simonas/32/13_2.png) [@Simonas](https://forum.sensmetry.com/u/Simonas)\
**Post date:** [August 19, 2026, 6:06pm UTC](https://forum.sensmetry.com/t/viz-fails-with-user-library-import-tom-sawyer-is-fine/561/4 "2026-08-19T18:06:53Z")

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Hi David,

That is because the CLI requires you to either list all `.sysml` files required to successfully parse your model. Your command only lists `Test-2000-User-Library.sysml`, but that file does not contain all required information (e.g. “Thing” or “MyTestLibrary”) it errors out. To fix it, you can use the following command. Note the addition of `MyTestLibrary.sysml`.

```shell
syside viz view Test-2000-User-Library.sysml MyTestLibrary.sysml --name T2000UL::MySys::ShowToaster -o diagrams

```

which generates the following diagram:

 ![diagram-ShowToaster](https://canada1.discourse-cdn.com/flex008/uploads/syside/original/1X/059e6d3a87676d2f6ab72808463a744a116b57d6.svg)

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**Author:** ![KestutisJankevicius](https://yyz2.discourse-cdn.com/flex008/user_avatar/forum.sensmetry.com/kestutisjankevicius/32/66_2.png) [@KestutisJankevicius](https://forum.sensmetry.com/u/KestutisJankevicius)\
**Post date:** [August 20, 2026, 5:18am UTC](https://forum.sensmetry.com/t/viz-fails-with-user-library-import-tom-sawyer-is-fine/561/5 "2026-08-20T05:18:53Z")

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With viz command, you can also just give directory path that contains all sysml models, so it is not strictly necessary to list each individual file.

> **[CLI Commands](https://docs.sensmetry.com/modeler/cli/commands/#modeler-cli-cmd-viz)**
>
> Generates SysML v2 diagrams from models using Modeler CLI’s built-in visualization engine. See the Diagram Generation guide for workflows and examples. | ,, Command, Description,,, check, Validate models for semantic errors and warnings,, format,...

 ![image](https://canada1.discourse-cdn.com/flex008/uploads/syside/original/1X/993f76562ccc326c137bf2786231402cfc2ecc2a.png)

You can also include / exclude explicitly more directories with -i (–include) and -e (–exclude) options

 ![image](https://canada1.discourse-cdn.com/flex008/uploads/syside/original/1X/09bc4edadfba7ffe0b71b0946835274824057327.png)