Hi guys, I'm facing a very weird behaviour ;

I have a folder connexion which contains  some excel files :

file1, file2, file3 etc..

Till now, everything is fine, I've added a new file4 and .. surprise surprise : the file is not VISIBLE under the folder connexion which results in an error when trying to reload data : 

Native Path:( *** ) System error:( *** )

I really am very confused .. I'm 100% sure that the path is CORRECT.. what should I do?