Unable to cast object of type 'OPCAutomation.OPCServerClass'

[AmirGhased71]

Hi sam,and all friends,
I have an OPC.Da.The server for the KEBA company is named Kestudio.
I connected to it with the Kebserver software and there is no problem.
but Error in IoTGateway master:

Unable to cast object of type 'OPCAutomation.OPCServerClass' to type 'OPCAutomation.IOPCGroups'.

at System.StubHelpers.InterfaceMarshaler.ConvertToManaged(IntPtr& ppUnk, IntPtr itfMT, IntPtr classMT, Int32 flags)
at OPCAutomation.OPCServerClass.get_OPCGroups()
at Automation.OPCClient.OPCClientWrapper.Init(String serverIP, String opcServerName) in E:\Project\IoTGateway\Plugins\Drivers\OPC.DaClient\OPCClient\OPCClientWrapper.cs:line 132

Please help me,
Thanks

[iioter]

Hi, can you send the software 'OPC.Da.The server for the KEBA company is named Kestudio' to my email?

[iioter]

It is true that iotgateway cannot connect to KeStudio.Opc, and the enterprise version can be connected through other solutions, but the open source version is not available yet.