# \[Fixed BUG\] Error after I/O Engineering update

**URL:** <https://tech-community.robotics.abb.com/t/fixed-bug-error-after-i-o-engineering-update/11303>\
**Category:** UpFeed\
**Created:** [December 8, 2023, 10:48am UTC](https://tech-community.robotics.abb.com/t/fixed-bug-error-after-i-o-engineering-update/11303 "2023-12-08T10:48:23Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![DenisFR](https://avatars.discourse-cdn.com/v4/letter/d/dc4da7/32.png) [@DenisFR](https://tech-community.robotics.abb.com/u/DenisFR)\
**Post date:** [December 8, 2023, 10:48am UTC](https://tech-community.robotics.abb.com/t/fixed-bug-error-after-i-o-engineering-update/11303/1 "2023-12-08T10:48:23Z")

</div>

Hello,  
After updating I/O Engineering to 1.1.0 I’ve got these errors:

```auto
Add-In assemblies, and their referenced assemblies must have unique names. Duplicates found:
C:\Program Files (x86)\ABB\RobotStudio 2023\Bin\tar-cs.dll (1.0.0.0)
C:\ProgramData\ABB\DistributionPackages\ABB.IOEngineering-1.1.0\RobotStudio\Add-In\tar-cs.dll (1.0.1.0)

```

RobotStudio 2023.3 (64-bit)  
Version 23.3.10550.0