ArcGIS Engine COM异常 HRESULT E_FAIL

我的项目中使用Gp做intersect，调试没问题，打包后运行interset却出现HRESULT E_FAIL，但打包后使用GP做buffer却没问题。请问这个该如何解决呢，arcengine 10.0
下面是自裁剪intersect类：

public static IFeatureLayer GetIntersectFeature(string pLayerPath, string OutPath, string Option)
  {
    //ILayer pLayer;
		Geoprocessor pGeoprocessor;
		IGeoProcessorResult pGeoProcessorResult;
		IGPUtilities pIGPUtilities;
		IFeatureClass pFeatureClass;
		IQueryFilter pQueryFilter;
    IFeatureLayer pFeatureLayer;

		ESRI.ArcGIS.AnalysisTools.Intersect intersect = new ESRI.ArcGIS.AnalysisTools.Intersect();
		intersect.in_features = pLayerPath;
		intersect.out_feature_class = OutPath;
		intersect.join_attributes = Option;
		//pFeatureLayer = GetIGPProcessLayer(intersect as IGPProcess);
		//return pFeatureLayer;

		pGeoprocessor = new Geoprocessor();
		ConnectGDBSQL pConnectGDBSQL = new ConnectGDBSQL();
		IWorkspace pWorkspace = pConnectGDBSQL.ConnectGDB();

		pGeoprocessor = new Geoprocessor();
		pGeoprocessor.SetEnvironmentValue("workspace", pWorkspace.PathName);
		pGeoprocessor.OverwriteOutput = true;
		pGeoProcessorResult = pGeoprocessor.Execute(intersect, null) as IGeoProcessorResult;

		pIGPUtilities = new GPUtilitiesClass();
		pIGPUtilities.DecodeFeatureLayer(pGeoProcessorResult.GetOutput(0), out pFeatureClass, out pQueryFilter);
		pFeatureLayer = new FeatureLayerClass();
		pFeatureLayer.FeatureClass = pFeatureClass;
		return pFeatureLayer;
  }