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Exception AccessViolationException when running demos

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10 Oct 2013 15:07 #1469 by byteslash
Bug resolved. Thank you.

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10 Oct 2013 14:35 #1468 by byteslash
Thanks. downloading now.

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09 Oct 2013 19:40 #1467 by support
Hi, the build (5.22.413.1) with a fix for the problem you found is now the publicly posted one in the Download area of our Web site.

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09 Oct 2013 13:56 #1461 by support
There seems to be a problem in the build we have recently posted (5.22.397.1). Thank you for discovering it.

We have now temporarily put back the previous build (5.22.362.1). Please download and reinstall.

We will fix the problem ASAP, too, and post an information here.

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09 Oct 2013 12:11 - 09 Oct 2013 12:13 #1460 by byteslash
Hello people, this is me trying to learn about OPC. I installed QuickOPC 5.2 .NET and i can't run any demo whatsoever.

It always gives the same exception:
AccessViolationException, Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

I am on a win7 pro 64bit machine with visual studio 2012 pro, running elevated VS. i have used the default simulator and matrikon's, the results are the same. what im i doing wrong? i didnt configure anything (maybe thats what im missing), just installed and tried the demos.

EDIT: given this code


var client = new EasyDAClient();
Console.WriteLine("Reading item...");
Console.WriteLine(client.ReadItemValue("", "OPCLabs.KitServer.2", "Demo.Ramp"));
Console.WriteLine("Press Enter to continue...");
Console.ReadLine();

The issue happens on the ReadItemValue call.
I have tried adding
EasyDAClient.ClientParameters.TurnOffActivationSecurity = true;
EasyDAClient.ClientParameters.TurnOffCallSecurity=true;

but it didnt help
Last edit: 09 Oct 2013 12:13 by byteslash.

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