# \#vc

**URL:** https://tech-community.robotics.abb.com/tag/vc/705.md

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## [RS loses write access to VC (error 20051)](https://tech-community.robotics.abb.com/t/rs-loses-write-access-to-vc-error-20051/8613)

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**Author:** [@Risto\_Virtanen](https://tech-community.robotics.abb.com/u/Risto_Virtanen)\
**Replies:** 4\
**Last updated:** [November 9, 2022, 9:40am UTC](https://tech-community.robotics.abb.com/t/rs-loses-write-access-to-vc-error-20051/8613 "2022-11-09T09:40:04Z")

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Hello, I have a RS station which I have been using for a long time without any issues. The recent problem may have appeared after upgrading to RS 6.08. Right after opening the station the VC works normally. After runnin…

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## [Virtual controller doesn't start (ArgumentNullException)](https://tech-community.robotics.abb.com/t/virtual-controller-doesnt-start-argumentnullexception/10782)

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**Author:** [@jaap](https://tech-community.robotics.abb.com/u/jaap)\
**Replies:** 2\
**Last updated:** [June 28, 2022, 10:25am UTC](https://tech-community.robotics.abb.com/t/virtual-controller-doesnt-start-argumentnullexception/10782 "2022-06-28T10:25:07Z")

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I have a problem regarding the virtual controllers. When i open my solution the controller is starting, but it stalls in this state. It never completes. Meanwhile i can edit my station and add targets. But when i want…

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## [World zone configuration lost after virtual controller restart](https://tech-community.robotics.abb.com/t/world-zone-configuration-lost-after-virtual-controller-restart/9235)

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**Author:** [@Jozef](https://tech-community.robotics.abb.com/u/Jozef)\
**Replies:** 2\
**Last updated:** [December 11, 2019, 8:51am UTC](https://tech-community.robotics.abb.com/t/world-zone-configuration-lost-after-virtual-controller-restart/9235 "2019-12-11T08:51:16Z")

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Hello, I’m facing an issue, World zone configuration are defined, and works, but after station is reopened or VC is restarted. Configuration is lost and I have to run configuration again. I’m using same configuration …

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## [Create your own geometry with virtual controller](https://tech-community.robotics.abb.com/t/create-your-own-geometry-with-virtual-controller/8863)

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**Author:** [@Felx](https://tech-community.robotics.abb.com/u/Felx)\
**Replies:** 0\
**Last updated:** [May 31, 2019, 7:21am UTC](https://tech-community.robotics.abb.com/t/create-your-own-geometry-with-virtual-controller/8863 "2019-05-31T07:21:51Z")

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Dear ABB Community, I’m in the process of building a modular system of subcomponents in RobotStudio. Therefore single objects are connected by a controller. The goal is to build a modular system that communicates with e…