uic: Error in line 6, column 14 : Unexpected element name
File '..\screen-shot\main_form_base.ui' is not valid
mingw32-make[1]: *** [ui_main_form_base.h] Error 1
mingw32-make: *** [debug] Error 2
15:37:47: 进程"G:\Qt\4.8.4\bin\make.bat"退出，退出代码 2 。
Error while building/deploying project screen-shot (kit: 桌面)
当执行步骤 'Make'时
我用QT creator打开进行编译，发生以上错误，怎么回事？这源代码怎么使用？界面文件main_form_base无法打开啊，为什么？
