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POSwitching to Release Build causes runtime error in Web Reference
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  1. POSwitching to Release Build causes runtime error in Web Reference
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    copied!<p>I've got a problem with a SOAP Web Reference that was generated by Visual Studio 2005 (.NET framework is v2.0.50727.42) - it works fine under the Debug build configuration (and has for months) but now that I want to go live and have compiled using the Release configuration, it has stopped working.</p> <p>Exceptions are raised at runtime whenever I call a method on the Web Reference. The most common exception is:</p> <pre><code>System.InvalidOperationException: There was an error generating the XML document. ---&gt; System.ArgumentException: Item has already been added. Key in dictionary: 'MayriseWebServices.RefuseService.PremiseSummaryStructure' Key being added: 'MayriseWebServices.RefuseService.PremiseSummaryStructure' </code></pre> <p>The language for the project and the generated Web Reference is VB.NET rather than C#. As the generated Reference.vb code doesn't actually change, just the build type, I can't find anything there, and I obviously can't debug the Release build.</p> <p>I've noticed that the Release build splits off a *.XmlSerializers.dll assembly from the main build. Are there known problems with this?</p> <p>I'd rather not go live with the Debug build for obvious reasons. Maybe I should do some reading about CodeDOM, I have been meaning to!</p> <p>I should mention that I've found <a href="https://stackoverflow.com/questions/312312/what-are-some-reasons-a-release-build-would-run-differently-than-a-debug-build">a post with reasons why a Release build will run differently</a> but it seems to be focused on C++.</p> <p>Thanks for any help you can give.</p> <p><strong>UPDATE:</strong> The third suggestion to turn off the serialization assemblies has fixed the problem. I changed the "Generate serialization assemblies" setting from "Auto" to "Off" in the Advanced Compile Options, and my tests pass now. I wasn't aware of that setting.</p> <p>I'm not sure what the underlying problem with the serialization assemblies is. I'll provide an update if I get a chance to debug the Release assembly using your advice in the second suggestion.</p>
 

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