 <p>PROBLEM: I had similar problem with a file created from other computer (a css in my case). To solve the problem I read that it is necessary to change the permissions but I don't know to do this on Windows so I try this alternative:</p> <p>SOLUTION: Open the file, copy the content and paste it in a new file, this makes sure the permissions are ok. </p> <p>When changing the name by using F2 it didn't work for me, I believe it is because the permissions where still the same.</p>