@ JuhaManninen
Thanks for your answer.
The detail is that it happens when the entire word of the filename is "selected" e.g with double click,
then it comes the response "File not found".
It's OK when a part of the word is selected, or just the cursor is on it.
I'm almost sure that was not in Laz 1.6.
So, It's NOT a real problem for me.
thanks again.