The Source from InnerException shows as "OpcLabs.EasyOpcRaw.DataAccess.RawEasyDAClient". There is no ProgID or CLSID.
I have no problem to run the OPC Analyzer if it helps to track down the problem. If required to do so, please send me the Tool or a Link to that one.

Regards,
Broxi

Hi there,
i have the same issue using .NET components with Visual Studio 2010. COM works without problems, but any compiled .NET app (also demo-apps) throws an exception "OPC operation failure" with error code -2147418113. The Tags are browseable, but not retrievable.
Data: {System.Collections.ListDictionaryInternal} (.NodeKeyValueCollection)
Source: OpcLabs.EasyOpcClassic
StackTrace:

Code:

bei OpcLabs.EasyOpc.OperationResult.ThrowIfFailed()
bei OpcLabs.EasyOpc.DataAccess.EasyDAClient.ReadItemValue(ServerDescriptor serverDescriptor, DAItemDescriptor itemDescriptor)
bei OpcLabs.EasyOpc.DataAccess.EasyDAClient.ReadItemValue(String machineName, String serverClass, String itemId, VarType dataType)
bei OpcLabs.EasyOpc.DataAccess.EasyDAClient.ReadItemValue(String machineName, String serverClass, String itemId)
bei ConsoleApplication1.Program.Main() in C:\Program Files\OPC Labs\QuickOPC-Classic 5.1\ExamplesNet\CSharp\VS2008\Console\ConsoleApplication1\Program.cs:Zeile 14.
bei System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
bei System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
bei Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
bei System.Threading.ThreadHelper.ThreadStart_Context(Object state)
bei System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
bei System.Threading.ThreadHelper.ThreadStart()



OS: Win7 32Bit
EasyOPCClassic: V 5.12.1311.1 (Trial)

Sorry for being late.

The exception box contains text "Catastrophic failure "
The version is "5.11.482.1"
note, that COM version works correctly.

Hello
I think that here is similar problem or at least it seems so.
I have to machines:
first - development PC in domain with trial version of opc client.
second - test PC in workgroup with wincc 6.2 as opc server.
There is configured local user on both machines with same username and password. When i run third party client on first machine using "Run As" in windows context menu, then I'm able to connect and read items from server. But if i use EasyOPC-DA.NET Demo Application in same way then I'm able to connect and subscribe item, but i cannot read the item value. The funny thing is that item value can be seen in item properties (number four if i remember correctly).