版本更新后旧版程序报错提示包没有下载&课程练习打开也报错

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1

更新2019.4.2的版本后，课程下载的程序打开报错Open Document Error: UiPath.Studio.Contracts.RecoverableException —> System.NotSupportedException: Error detecting project version
at UiPath.Project.ProjectData.WorkflowDataUpgrade.GetLatestProjectData(String projectContent, Dictionary2 availablePackages) at UiPath.Project.WorkflowProjectRepository.<>c__DisplayClass11_0.<Read>b__0() at System.Threading.Tasks.Task1.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
— End of stack trace from previous location where exception was thrown —

2

应该是版本更新后，相应的Activities补丁包需要更新，
在Manage Packages中更新颜色为红色的补丁包，
更新完成后，就可以打开了。