error while starting ansys aim: Ansys.Core.Expressions.ExpressionEvaluator

- November 17, 2019 at 8:54 pm
  
  Fireengineering
  Subscriber
  
  Hello everyone!
  
  I just downloaded Discovery AIM student and installed it afterwards. As i tried to to open the workbench for the first time, this error shows up (for those of you wondering: it's in german):
  
  An unexpected error has occurred: Der Typeninitialisierer für "Ansys.Core.Expressions.ExpressionEvaluator" hat eine Ausnahme verursacht.
  
  System.MissingMethodException: Methode nicht gefunden: "System.Collections.Generic.IEnumerable`1 Microsoft.Scripting.Utils.ReflectionUtils.GetCustomAttributes(System.Reflection.Assembly, Boolean)".
  
  bei IronPython.Runtime.Binding.PythonBinder.DomainManager_AssemblyLoaded(Object sender, AssemblyLoadedEventArgs e)
  
  bei IronPython.Runtime.Binding.PythonBinder..ctor(PythonContext pythonContext, CodeContext context)
  
  bei IronPython.Runtime.PythonContext..ctor(ScriptDomainManager manager, IDictionary`2 options)
  
  The error goes on and on for quite a bit. If there is a need for the rest of it, I'll be happy to provide it.
  
  Unfortunately my google research wasn't helpful at all. I would really appreciate any form of solution or information on how to fix it.
  
  Thank you for your help!
- November 19, 2019 at 9:41 pm
  
  tsiriaks
  Ansys Employee
  
  Please try using ANSYS Student package instead if you want to use Workbench.
  
  Thanks,
  
  Win
- October 4, 2021 at 11:11 am
  
  n1ls1995
  Subscriber
  
  .
  I have the same error, how do i fix it? I downloaded the student version and have tried everything i could find on the internet but nothing helps.
  .
- March 14, 2022 at 6:59 pm
  
  heritbutani
  Subscriber
  
  .
  An unexpected error has occurred: The type initializer for 'Ansys.Core.Expressions.ExpressionEvaluator' threw an exception.
  System.MissingMethodException: Method not found: 'System.Collections.Generic.IEnumerable`1 Microsoft.Scripting.Utils.ReflectionUtils.GetCustomAttributes(System.Reflection.Assembly, Boolean)'.
    at IronPython.Runtime.Binding.PythonBinder.DomainManager_AssemblyLoaded(Object sender, AssemblyLoadedEventArgs e)
    at IronPython.Runtime.Binding.PythonBinder..ctor(PythonContext pythonContext, CodeContext context)
    at IronPython.Runtime.PythonContext..ctor(ScriptDomainManager manager, IDictionary`2 options)
  --- System.Reflection.TargetInvocationException: Failed to load language 'IronPython 2.7.4': Method not found: 'System.Collections.Generic.IEnumerable`1 Microsoft.Scripting.Utils.ReflectionUtils.GetCustomAttributes(System.Reflection.Assembly, Boolean)'.
    at Microsoft.Scripting.Runtime.LanguageConfiguration.LoadLanguageContext(ScriptDomainManager domainManager, Boolean& alreadyLoaded)
    at Microsoft.Scripting.Runtime.DlrConfiguration.LoadLanguageContext(ScriptDomainManager manager, LanguageConfiguration config)
    at Microsoft.Scripting.Runtime.DlrConfiguration.TryLoadLanguage(ScriptDomainManager manager, AssemblyQualifiedTypeName providerName, LanguageContext& language)
    at Microsoft.Scripting.Runtime.ScriptDomainManager.GetLanguageByTypeName(String providerAssemblyQualifiedTypeName)
    at Microsoft.Scripting.Hosting.ScriptRuntime.GetEngineByTypeName(String assemblyQualifiedTypeName)
    at Ansys.Core.Expressions.ExpressionEvaluator.CreateScriptEngine()
  --- System.TypeInitializationException: The type initializer for 'Ansys.Core.Expressions.ExpressionEvaluator' threw an exception.
    at Ansys.Core.Expressions.ExpressionEvaluator..ctor()
    at Ansys.Core.Expressions.ExpressionManager..ctor()
    at Ansys.ParameterManager.Data.ParameterEvaluator..ctor(ParameterContainer container)
    at Ansys.ParameterManager.Data.ParameterContainer..ctor()
    at Ansys.ParameterManager.Commands.CreateStaticParameterContainerCommand.Execute(IFullContext context)
    at Ansys.Core.Commands.Concurrency.CommandWorkUnit.executeInContext(CommandContext subContext, IExecutionEngineCallback tracer)
    at Ansys.Core.Commands.Concurrency.BaseWorkUnit.doExecute(IExecutionEngineCallback executionEngine, CommandContext subContext)
    at Ansys.Core.Commands.Concurrency.BaseWorkUnit.Execute(IExecutionEngineCallback executionEngine, Boolean dontCatchExceptions)
  --- Ansys.Core.Commands.CommandFailedException: The type initializer for 'Ansys.Core.Expressions.ExpressionEvaluator' threw an exception.
  CommandName: Parameters.CreateStaticParameterContainer()
    at Ansys.Core.Commands.CommandAsyncResult.RethrowFailureException(Exception e)
    at Ansys.Core.Commands.CommandAsyncResult.Wait(Int32 milliSecondsTimeout, Boolean exitContext)
    at Ansys.Core.DataModel.ProjectSystem.Project.InvokeProjectInitializationCommands(IProtectedContext commandContext)
    at Ansys.Core.DataModel.ProjectSystem.ResetCommand.Execute(IFullContext context)
    at Ansys.Core.Commands.Concurrency.CommandWorkUnit.executeInContext(CommandContext subContext, IExecutionEngineCallback tracer)
    at Ansys.Core.Commands.Concurrency.BaseWorkUnit.doExecute(IExecutionEngineCallback executionEngine, CommandContext subContext)
    at Ansys.Core.Commands.Concurrency.BaseWorkUnit.Execute(IExecutionEngineCallback executionEngine, Boolean dontCatchExceptions)
  --- Ansys.Core.Commands.CommandFailedException: The type initializer for 'Ansys.Core.Expressions.ExpressionEvaluator' threw an exception.
  CommandName: Reset()
    at Ansys.Core.Commands.CommandAsyncResult.RethrowFailureException(Exception e)
    at Ansys.Core.Commands.CommandAsyncResult.Wait(Int32 milliSecondsTimeout, Boolean exitContext)
    at Ansys.Core.DataModel.ProjectSystem.ResetCommand.InvokeAndWait(IProtectedContext context)
  .