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Error importing the Package

rexgatling1988 5 months ago in realvirtual.io Starter and Professional updated by R S 1 month ago 5

I get this error when I import the package to Unity:

Assets/game4automation/private/RuntimeUI/SceneMouseNavigation.cs(801,38): error CS0103: The name 'SpaceNavigator' does not exist in the current context

Support 1 month ago

Is fixed in latest release.

Under review

Circular conveyor belt

yangkang 6 months ago updated by Support 6 months ago 1


I wanted to achieve a circular conveyordemo effect (Fig1), a reference to radialConveyordemo (Fig2), but the MU transported in a circular conveyordemo is skewed in position, and I froze the XYZ rotation of the MU

Image 878

Fig 1

Image 877

Fig 2

Support 1 year ago

Can you turn  in the OPCUA interface  the DebugMode to true and send us the content of the console log?

Under review

OPCUA Interface - Error in activating session

Ernesto 1 year ago in OPCUA4Unity updated by Support 12 months ago 30

Dear all,

I'm having problems to connect to a remote OPC UA server using the OPCUA Interface Component.

I followed the "Connection troubleshouting" guidelines provided in "/game4automation/Documentation/opcua.html".

Configuring the OPC Server with "No security certificates and passwords" I could connect OPC Watch with the server (see Image):

Image 576

However, when I tried connecting through the Unity OPCUA Interface:

Image 577

I get the following error message:

OPCUA Interface - Error in activating session [BadUnknownResponse]
UnityEngine.Debug:LogError (object)
game4automation.OPCUA_Interface:Connect () (at Assets/game4automation/private/Interfaces/OPCUA4Unity/OPCUA_Interface.cs:179)
game4automation.OPCUA_Interface:EditorImportNodes () (at Assets/game4automation/private/Interfaces/OPCUA4Unity/OPCUA_Interface.cs:246)
game4automation.OPCUAInterfaceEditor:OnInspectorGUI () (at Assets/game4automation/private/Interfaces/OPCUA4Unity/private/Editor/OPCUAInterfaceEditor.cs:20)
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

As it can be seen in the last image, I'm using Unity 2021.3.2f1 Editor with Game4Automation Digital Twin Professional 2020.

Any idea of what I'm missing?

Thank you in advanced.

Support 12 months ago

Hi, I checked. I found an issue with reconnection, that is why I am attaching here a new script. This will be included in next release.


The disconnect problem and the PLCOutputBool can't be reproduced here on my computer with Simit.


No Mutex PLCSim Advanced Interface proble

Pablo 2 years ago in realvirtual.io Starter and Professional updated by Support 12 months ago 18


we are using the PLCSim Advanced Interface.

We can Import the PLCSignals without any Troubles:

Image 519

The first time that we start the simulation in Unity everything is working fine (COM OK).

But after we stop the unity editor and try to start again, we get “No Mutex”... so no communication is established between the plc and Unity.

We found out that creating a new PLC Instance and re-importing the signals “fix the error”... but just for the first run. Then we have to repeat the process of creating a new PLC again and again...

Could be some background process blocking the communication? Thank you in advance.

Support 12 months ago

Current working coupler.exe is available in the download area:



Robodk version with game4automation professional or game4automation OPC UA

efrensilveyra 3 years ago in OPCUA4Unity updated by Support 2 years ago 1

Which version of robodk is compatible with game4automation opc ua or game4automation professional. I ask, because I want to communicate robodk 4.0 with game4automation professional.


When will Unity 2019 be supported?

Stan 3 years ago in OPCUA4Unity updated by Support 3 years ago 5


I was wondering when will OPC UA for Unity 2019 will be supported?

With kind regards,

Stan (Developer at Siemens)

Support 3 years ago

Hi, we have no tutorial about that.Even if Unity 2019 is not officially supported yet, you should be able to get it running. What is your problem. What kind of error messages do you have?


Error in creating new Subscription in Demo Scene (OPCUA4UNITY)

Ege 12 hours ago in OPCUA4Unity updated 12 hours ago 0


I am using OPCUA4UNITY. When I try out the demo scene with the OPC UA C++ Demo Server, I get this error when trying to read nodes. Importing nodes seem to work fine.

Image 980

And for some nodes (DateTime in this case) I get this error. None of them seems to work.

Image 981

Using Unity version 2022.3.0

Under review


Matvienko Matvey 1 week ago in OPCUA4Unity updated by Support 1 week ago 3


When I'm trying to connect to RoboDK with OPCUA - getting this message.
How to solve this problem?

Image 978


MU not moving properly

linlinoful 1 month ago in General Questions updated by Support 1 month ago 1


MU is sitting on transport surface. Moving up and down is possible but moving to the left and right does not cause the MU to follow (see pictures). Any ideas?

Image 974

Image 975