OK, thank to evryone has read my post.

The installation of sql server required I set the permissions at Instance level and I checked all the checkboxes in the security folder

at...

Solution failed.

Now I installed a new istance and the error is the same

only a variation "SQLEditors" is the last word

I'll try a restore of the installation because I use this pc for proof purpose and I removed a copy of visual studio 2013.

There is the possibility some file be...