Thanks!
I deleted Maxton. Maxton reinstalled again.
When you double-click on the file, the skin is not installed, open the file manager window downloads. Tell me how to solve this problem.
Other skins, too, can not be established by means of a double click on the file.
Skin is attached to the issue.
Yoyoako MX3 Modern V4.4.7.mxskin