----2013.1.1210----- While making changes to an element's find logic, I received an error. After this error happened, it broke every element and then I had to relaunch test studio to get rid of this compiler error. [12/09 10:21:29,Telerik.TestStudio.exe(6040:27),ProjectModel] Project.RegenerateElementsCode() : EXCEPTION! (see below) Situation: Trouble generating project elements file on first attempt Outer Exception Type: System.InvalidOperationException Message: Collection was modified; enumeration operation may not execute. HRESULT: 0x80131509 (Official ID (if app.) = COR_E_INVALIDOPERATION, Error Bit = FAILED, Facility = FACILITY_URT, Code = 5385) Call Stack: at System.Collections.ArrayList.ArrayListEnumeratorSimple.MoveNext() at Microsoft.CSharp.CSharpCodeGenerator.GenerateNestedTypes(CodeTypeDeclaration e) at Microsoft.CSharp.CSharpCodeGenerator.GenerateType(CodeTypeDeclaration e) at Microsoft.CSharp.CSharpCodeGenerator.System.CodeDom.Compiler.ICodeGenerator.GenerateCodeFromType(CodeTypeDeclaration e, TextWriter w, CodeGeneratorOptions o) at Microsoft.CSharp.CSharpCodeGenerator.GenerateTypes(CodeNamespace e) at Microsoft.CSharp.CSharpCodeGenerator.GenerateNamespace(CodeNamespace e) at Microsoft.CSharp.CSharpCodeGenerator.System.CodeDom.Compiler.ICodeGenerator.GenerateCodeFromNamespace(CodeNamespace e, TextWriter w, CodeGeneratorOptions o) at Microsoft.CSharp.CSharpCodeGenerator.GenerateNamespaces(CodeCompileUnit e) at Microsoft.CSharp.CSharpCodeGenerator.System.CodeDom.Compiler.ICodeGenerator.GenerateCodeFromCompileUnit(CodeCompileUnit e, TextWriter w, CodeGeneratorOptions o) at System.CodeDom.Compiler.CodeDomProvider.GenerateCodeFromCompileUnit(CodeCompileUnit compileUnit, TextWriter writer, CodeGeneratorOptions options) at ArtOfTest.WebAii.Design.ProjectModel.Project.CreateElementsCodeFile(CodeDomProvider provider, Boolean& codeFileCreated, String& codeString, Exception& ex) at ArtOfTest.WebAii.Design.ProjectModel.Project.RegenerateElementsCode()