"No implicit conversion from nil to integer" in my custom script

This is using Pokemon Essentials V15.1 Gen 6.

So, I've been working on a new script for Pokemon Essentials, and basically what happens is this: it gives me the error that you see below, whenever I initialize the scene in the medium screen setting. Whenever I initialize the scene in Large, I do not get this error.

At the moment, I've been learning a lot, when it comes to programming in RGSS, but I do not know how to go about fixing this error, at the moment, since this only applies to the new scene that I've been working on.

Exception: TypeError
Message: no implicit conversion from nil to integer
Sprite_Resizer:302:in `_xeq_SpriteResizer'
Sprite_Resizer:302:in `x='
SpriteWindow:1923:in `x='
SpriteWindow:4759:in `initialize'
Ability Matrix:11:in `new'
Ability Matrix:11:in `pbAddSprite'
Ability Matrix:84:in `initialize'
Custom Menu:629:in `new'
Custom Menu:629:in `pbChooseSelection'
Custom Menu:331:in `pbBeginMenu'

And this only started happening around the time that I upgraded to Windows 10, and when I started including these few lines of code into my new script: These were added in, post upgrade to Windows 10. I've been working on this personal project of mine for a few weeks now, and started making a lot of headway, but, I'd hate for it all to stop, because of this issue that I'm having.



For some reason, those 2 lines of code piss off RGSS so hard that it causes this error to occur. But, in my script I use graphics to indicate that certain things are turned on or off. I don't know why it's just THOSE 2 lines of code and nothing else.

Update: For some odd reason... restarting my computer fixed it.

........ why? Why though? Why does that work?

Probably you were out of RAM?