This topic is a answer about this problem. I was trying to open a file but i couldn't do it, and i looked for information about this but anyone have answered it before in the forum. My problem was that i have used a accent in the name of my folder where i have saved the file and for this reason OMEdit couldn't open.

To sum up, NOT TO USE ACCENT IN THE NAME OF THE FOLDER WHERE YOU SAVE THE FILE THAT YOU WANT TO OPEN.