workbench不能打开以前的算例

风过梦圆

workbench16.1，打开以前的一个算例，提示下面这些问题。。。试了好几个文件都有这个问题，请假大家这是什么问题，该怎么处理



图片中内容：
Unable to load project 'F:\analysis5\5.wbpj': Ansys.Core.Persistence.Migration.MigrationException: Error migrating dp0 design point file from handler Ansys.EngineeringData.Commands.Addin:Behaviors ---> System.ArgumentException: 已添加了具有相同键的项。
   在 System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
   在 Ansys.EngineeringData.Commands.ProjectMigrationHandlers.MigrationHandler_12_1_0_0.Visit(IStorageObjectWriter storage, XmlStorageVisitorContext context)
   在 Ansys.Core.Persistence.XmlStorageObject.Accept(IXmlStorageVisitor visitor, XmlStorageVisitorContext context)
   在 Ansys.Core.Persistence.XmlStorageObject.Accept(IXmlStorageVisitor visitor, XmlStorageVisitorContext context)
   在 Ansys.Core.Persistence.XmlStorageObject.Accept(IXmlStorageVisitor visitor, XmlStorageVisitorContext context)
   在 Ansys.Core.Persistence.Migration.MigrationManager.ApplyMigrationHandler(MigrationHandlerBase handler)
   --- 内部异常堆栈跟踪的结尾 ---
   在 Ansys.Core.Persistence.Migration.MigrationManager.ApplyMigrationHandler(MigrationHandlerBase handler)
   在 Ansys.Core.Persistence.Migration.MigrationManager.Migrate(PersistenceContext context, Boolean& migrationWa**ecuted)
   在 Ansys.Core.DataModel.ProjectSystem.Project.LoadProject(String projectFilePath, PersistenceContext context, Boolean merge)
   在 Ansys.Core.Persistence.Commands.OpenCommand.LoadProjectInternal(IFullContext context, String projectFilePath, Boolean mergedProject, AccessLock shareLock)