Microsoft .NET Framework 3.5 安装错误，继续解决，谢谢！！！

以下是安装过程中出现的错误日志。请大虾们解决下。谢谢啦！！！！
[08/16/09,14:00:28] Microsoft .NET Framework 3.5LP - CHS: [2] dlmgr: -2147023174, CDownloadJobBITSImpl::GetBitsJobState() : Failed to get state.
Context: 0 Error code: -2147023174 Description:
[08/16/09,14:00:28] Microsoft .NET Framework 3.5LP - CHS: [2] dlmgr: -2147023174, CDownloadJobBITSImpl::GetBitsJobState() : Failed to get state.
Context: 0 Error code: -2147023174 Description:
[08/16/09,14:00:34] Optional Component 'Microsoft .Net Framework 3.0': [2] Error code 1168 for this component means "找不到元素。
"
[08/16/09,14:00:34] Optional Component 'Microsoft .Net Framework 3.0': [2] Component Optional Component 'Microsoft .Net Framework 3.0' returned an unexpected value.
[08/16/09,14:00:34] Optional Component 'Microsoft .Net Framework 3.0': [2] Return from system messaging: 找不到元素。

[08/16/09,14:01:03] WapUI: [2] DepCheck indicates Optional Component 'Microsoft

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