# Arnc0man version mismatch after upgrading CNC application

**URL:** <https://community.br-automation.com/t/arnc0man-version-mismatch-after-upgrading-cnc-application/11322>\
**Category:** Mechatronics & Motion\
**Tags:** acp10\
**Created:** [May 21, 2026, 3:30pm UTC](https://community.br-automation.com/t/arnc0man-version-mismatch-after-upgrading-cnc-application/11322 "2026-05-21T15:30:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Matjaz\_Kopac](https://avatars.discourse-cdn.com/v4/letter/m/FF8800/32.png) [@Matjaz\_Kopac](https://community.br-automation.com/u/Matjaz_Kopac)\
**Post date:** [May 21, 2026, 3:30pm UTC](https://community.br-automation.com/t/arnc0man-version-mismatch-after-upgrading-cnc-application/11322/1 "2026-05-21T15:30:11Z")

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Hi community,

I did an upgrade of existing CNC application from AS 4.2 to the latest AS 4.12.8. I’ve upgraded motion HW, Automation Runtime (Q4.93), motion libraries (ACP10 ARNC0 - i use version 5.29.1 now). Build is finished with an error: “module arnc0man version mismatch”. I have version 3.13 of this module, while it is requested V3.18.2. How can I upgrade this module, it is not available on B&R web site. Is this part of some other library? By the way, library Arnc0ext is upgraded to 3.18.2.

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**Author:** ![valerio.manenti](https://dub1.discourse-cdn.com/brcommunity/user_avatar/community.br-automation.com/valerio.manenti/32/11712_2.png) [@valerio.manenti](https://community.br-automation.com/u/valerio.manenti)\
**Post date:** [May 21, 2026, 3:41pm UTC](https://community.br-automation.com/t/arnc0man-version-mismatch-after-upgrading-cnc-application/11322/2 "2026-05-21T15:41:16Z")

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Hi @Matjaz_Kopac  
our Community doesn’t provide the AS4\_MC\_Arnc0ext\_V5.29.1.exe file, you have to ask our Support in your country that file.

Ciao  
Valerio