modern_algebra's modifed Fog of War needs a fix

Hey anyone and everyone!

I've been wanting to use Modern_Algebra's fog of war script in my VX Ace game for a while. Someone made a fast-edit so that it would run in RPG Maker VX Ace, however it runs with issues. The issue of it randomly created fog in weird patterns was fixed after I asked for some help, but it still has a few more issues.

One issue is that it doesn't remove fog on some maps, leaving you with a blanket of unremovable fog. Another issue is that it will clear away the fog from the previous map on the new map, marking it as walked.

I'd appreciate any help on the matter. The link for the script with the last help received is here:

http://forums.rpgmakerweb.com/index.php?/topic/31985-how-to-prevent-shadow-pen-from-rendering/

These are the Fog of Wars I'm using which go in the system folder:

https://dl.dropboxusercontent.com/u/5536575/Resources/FogOfWar.png

https://dl.dropboxusercontent.com/u/5536575/Resources/FogOfWar2.png

https://dl.dropboxusercontent.com/u/5536575/Resources/FOW%20Autotile%20H78J.png

Any and all help is appreciated.

Here is the original script for RMVX Ace:

http://rmrk.net/index.php?topic=39271

Here is Nelderson's edit:

https://steamcommunity.com/linkfilter/?url=http://forums.rpgmakerweb.com/index.php?/topic/16284-paid-visibilityfogofwar-script-ace/?p=160143