All files are seen as starting with _. underscore dot and my windows 7 pc doesnt show this

I am using unity4.5.4.f1 on windows 7 pc basic license.
I just bought the k4 manufactura mobile environment bundle imported it into a project and I am getting 100s of errors that

folders/._filename is not a valid asset file name. Please make sure there are no slashes or other unallowed characters in the file name. The file will be ignored. When I look the _. is not a part of the filename.
I have read other similar posts
this is what I have tried.
1. Make the assests folder writeable eg take...

All files are seen as starting with _. underscore dot and my windows 7 pc doesnt show this