# RobotStudio .NET exception

**URL:** <https://tech-community.robotics.abb.com/t/robotstudio-net-exception/4711>\
**Category:** RobotStudio\
**Created:** [March 5, 2012, 2:35pm UTC](https://tech-community.robotics.abb.com/t/robotstudio-net-exception/4711 "2012-03-05T14:35:01Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Neily03](https://avatars.discourse-cdn.com/v4/letter/n/c6cbf5/32.png) [@Neily03](https://tech-community.robotics.abb.com/u/Neily03)\
**Post date:** [March 5, 2012, 2:35pm UTC](https://tech-community.robotics.abb.com/t/robotstudio-net-exception/4711/1 "2012-03-05T14:35:01Z")

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Trying to build a station by going Online then clicking the Go Offline button.

RS asks me to load a library for the Conveyor which I do, then I get this;

 ![](https://europe1.discourse-cdn.com/flex005/uploads/robotics1/original/2X/2/2530663ba7112da09a9808f220911d205ecdfa79.jpeg)

So I click Yes then after a few seconds I get the following error;

_RobotStudio .NET exception: Exception from HRESULT: 0xC0048416_  
_============================================_  
_Base exception: COMException_  
_Exception from HRESULT: 0xC0048416_  
_at Interop.LgVCHelper.ILgVCHelper.SetSignalLogicalState(String signal, Boolean blocked)_  
_at RobotStudio.Services.Controller.VcManager.GetConveyorParameters(RsIrc5Controller irc5Ctrl, RsIrc5ConveyorEncoderUnit encoder, Boolean& reinitSubscription)_  
_at RobotStudio.Services.Controller.VcManager.UpdateConveyorParameters(RsIrc5Controller irc5Ctrl)_  
_at ABBInternal.Controller.StationVCManager.PostRestartHandling(LibraryLoadLogic libraryLoadLogic, RsIrc5Controller irc5Controller, Mechanism[] mechanismToMap, Boolean bCheckBaseFrame, Station station, Boolean& advancedStartup, Boolean& restarted)_

and

BT0905472-10\_8: Disconnected 05/03/2012 13:16:44 Controllers

After that station does not work…

Any Ideas?

Cheers.

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<div class="post-metadata">

**Author:** ![Henrik\_Berlin](https://dub1.discourse-cdn.com/flex005/user_avatar/tech-community.robotics.abb.com/henrik_berlin/32/1011_2.png) [@Henrik\_Berlin](https://tech-community.robotics.abb.com/u/Henrik_Berlin)\
**Post date:** [March 6, 2012, 8:46am UTC](https://tech-community.robotics.abb.com/t/robotstudio-net-exception/4711/2 "2012-03-06T08:46:57Z")

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We need to look closer at your backup to figure out what’s going on. Please get in touch with your local ABB Robotics Service representative that can forward your issue to our tech support.