# unrecognized MAVC version 1940

**URL:** https://discourse.paraview.org/t/unrecognized-mavc-version-1940/15094
**Category:** ParaView Support
**Created:** [July 21, 2024, 6:36pm UTC](https://discourse.paraview.org/t/unrecognized-mavc-version-1940/15094 "2024-07-21T18:36:15Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![Fin](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/f/96bed5/32.png) [@Fin](https://discourse.paraview.org/u/Fin)
#### Post date: [July 21, 2024, 6:36pm UTC](https://discourse.paraview.org/t/unrecognized-mavc-version-1940/15094/1 "2024-07-21T18:36:15Z")

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encounter the error of unrecognized MAVC version 1940 when super build paraview. VC version 2022. the command is `cmake -GNinja -D CMAKE_BUILD_TYPE=Release ../paraview-superbuild` and paraview super build tag is v5.12.1

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### Author: ![ben.boeckel](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/b/ea5d25/32.png) [@ben.boeckel](https://discourse.paraview.org/u/ben.boeckel)
#### Post date: [July 21, 2024, 11:03pm UTC](https://discourse.paraview.org/t/unrecognized-mavc-version-1940/15094/2 "2024-07-21T23:03:54Z")

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Can you please give the full error with backtrace?

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### Author: ![Fin](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/f/96bed5/32.png) [@Fin](https://discourse.paraview.org/u/Fin)
#### Post date: [July 22, 2024, 1:36am UTC](https://discourse.paraview.org/t/unrecognized-mavc-version-1940/15094/3 "2024-07-22T01:36:22Z")

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![image](https://discourse.paraview.org/uploads/default/original/2X/b/bfbf11d050b302cb225812f74d30499e7fb6bc9a.png)

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### Author: ![ben.boeckel](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/b/ea5d25/32.png) [@ben.boeckel](https://discourse.paraview.org/u/ben.boeckel)
#### Post date: [July 22, 2024, 5:34pm UTC](https://discourse.paraview.org/t/unrecognized-mavc-version-1940/15094/4 "2024-07-22T17:34:03Z")

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Did you run `git submodule update` when checking out the 5.12.1 tag?

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [August 8, 2024, 10:23am UTC](https://discourse.paraview.org/t/unrecognized-mavc-version-1940/15094/5 "2024-08-08T10:23:02Z")

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This was fixed recently in [https://gitlab.kitware.com/paraview/common-superbuild/-/merge\_requests/654](https://gitlab.kitware.com/paraview/common-superbuild/-/merge_requests/654)

5.12.1 does not contain the fix.