错误信息：
TypeError: Error #1007: 尝试实例化的函数不是构造函数。
at mx.controls::ProgressBar/createChildren()[E:\dev\4.y\frameworks\projects\mx\src\mx\controls\ProgressBar.as:1118]
at mx.core::UIComponent/initialize()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:7634]
at mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::childAdded()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:7495]
at mx.core::UIComponent/addChildAt()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:7199]
at spark.components::Group/addDisplayObjectToDisplayList()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\Group.as:2037]
at spark.components::Group/http://www.adobe.com/2006/flex/mx/internal::elementAdded()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\Group.as:1628]
at spark.components::Group/setMXMLContent()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\Group.as:633]
at spark.components::Group/createChildren()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\Group.as:855]
at mx.core::UIComponent/initialize()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:7634]
at mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::childAdded()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:7495]
at mx.core::UIComponent/addChildAt()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:7199]
at spark.components::Group/addDisplayObjectToDisplayList()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\Group.as:2037]
at spark.components::Group/http://www.adobe.com/2006/flex/mx/internal::elementAdded()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\Group.as:1628]
at spark.components::Group/setMXMLContent()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\Group.as:633]
at spark.components::Group/createChildren()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\Group.as:855]
at mx.core::UIComponent/initialize()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:7634]
at mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::childAdded()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:7495]
at mx.core::UIComponent/addChildAt()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:7199]
at spark.components::Group/addDisplayObjectToDisplayList()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\Group.as:2037]
at spark.components::Group/http://www.adobe.com/2006/flex/mx/internal::elementAdded()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\Group.as:1628]
at spark.components::Group/setMXMLContent()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\Group.as:633]
at spark.components::Group/set mxmlContent()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\Group.as:573]
at spark.components::SkinnableContainer/set mxmlContent()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\SkinnableContainer.as:657]
at spark.components::SkinnableContainer/createDeferredContent()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\SkinnableContainer.as:1050]
at spark.components::SkinnableContainer/createContentIfNeeded()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\SkinnableContainer.as:1078]
at spark.components::SkinnableContainer/createChildren()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\SkinnableContainer.as:885]
at mx.core::UIComponent/initialize()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:7634]
at Views.EmployeeExamination::EmpExaminationDetailsView/initialize()
at mx.managers.systemClasses::ChildManager/childAdded()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\systemClasses\ChildManager.as:189]
at mx.managers::SystemManager/http://www.adobe.com/2006/flex/mx/internal::rawChildren_addChildAt()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\SystemManager.as:2133]
at mx.managers::SystemManager/addChildAt()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\SystemManager.as:1753]
at mx.managers::SystemManager/addChild()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\SystemManager.as:1736]
at mx.managers::PopUpManagerImpl/addPopUp()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\PopUpManagerImpl.as:344]
at mx.managers::PopUpManager$/addPopUp()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\PopUpManager.as:193]
at Utils::WindowUtils$/PopUpWindow()[D:\Project\Safety Norms Learn Examination System\Codes\SNLESWebClient\src\Utils\WindowUtils.as:35]
at Views.EmployeeExamination::EmployeeExaminationView/imageEdit_clickHandler()[D:\Project\Safety Norms Learn Examination System\Codes\SNLESWebClient\src\Views\EmployeeExamination\EmployeeExaminationView.mxml:94]
at Views.EmployeeExamination::EmployeeExaminationViewInnerClass7/__imageEdit_click()[D:\Project\Safety Norms Learn Examination System\Codes\SNLESWebClient\src\Views\EmployeeExamination\EmployeeExaminationView.mxml:216]
解决方法：
在项目属性中，找到附加的编译器参数，添加：
-keep-all-type-selectors=true
-warnings=false