qt creater 入门坑,提示错误Could not create directory ....

环境:win10+mingw+qt4.8.6+qt creater3.3.0
qt creater参考安装教程:
https://blog.csdn.net/fengjunwang1980/article/details/78093638

新建工程时,提示错误:
Could not create directory “C:\Users\Administrator\Documents\Error in " Util.asciify(“build-untitled4-unknown-Debug”)”: TypeError: Result of expression ‘Util.asciify’ [undefined] is not a function."
Error while building/deploying project untitled4 (kit: 桌面)
When executing step “qmake”

参考文章:
https://blog.csdn.net/u012930316/article/details/77160179

实验过程:

1.shadow build 去掉打钩,run正常.
2.勾选shadow build,修改为如上配置,run正常.
后经实践发现应该是当前运行的工程目录

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官网下载的5.12和5.11安装有问题。5.9.0安装成功。