@Zillaf: No, no and no! 
Why do you write this here now as my advice above was clear and not telling anything about using any of my patch attempts from 2 years ago
IF this would be a good idea I would have told you so, don't you think so?
Move on to Grid List please, IGV is dead even though any patched version
might work (today)!
It's simply no good idea to keep that alive and repost versions which are now already 2 years old, do not show in Minion, need manual effort, and will never get any update or compatibility checks with other addons anymore in the future. Just change now, adopt, do it 1 time and live with an updated version and addon that looks and feels the same, even provides more support and compatibility.
You need to say "yes" to changes
