Doubling file names in Visual Studio 2012

Question

In Visual Studio 2012 in Solution Explorer window have doubled file names (sorry for no screenshots - here is the link http://floomby.ru/s1/uaxC8K). In the same time it\'s

Answer 1

Another way is that

1. Exclude duplicate files from project
2. Click on "Show all files" button on top of solution explorer
3. Click again on "Show all files" button on top of solution explorer (this time you should see only one excluded file)
4. Include file again

You can do this on folders too