Why don't you set a permanent open type with Notepad ++
?
Right click the SESSION
token and choose, Open with -> Notepad++ , and Select the below checkbox where it says
"Always use the selected program to open this kind of file
".
Click OK.
EDIT
That was the first thing tried, but the option "Always use the
select/..." stays greyed out in the dialogue box. Because reasons. And
it is Windows.
Open Control Panel / Default Programs.
Select the Associate a file type or protocol with a program link.
After all of the file types load, select the file type you wish to configure and click the Change Program button.
If the program is not in the Recommended section, click the down arrow for Other Programs.
If it is still not visible, select the Browse button and navigate to where the programs *.EXE file is located.
Select the program and click OK.
If that doesn't work, Here's a thread from SuperUser