Unique Problem: The Parameter is Incorrect

[Naedox]

I tried to start up MapleKey, but instead of starting up, it gives me an error something like what's currently attached.

I respectfully request to know how to resolve this issue...if that's okay with you GMs

If it's any reason as to why it is, I made the mistake of exiting out of the client in windowed mode the last time I shut down the program.

[SunRaine]

since its v83 it auto re open as full screen mode so that not the prob~
u have to open the game as admin and with different properties (cuz fk win8/10)
and make sur u have other task close (close skype/moosic/steam/ internet and so on)

[Anime]

/Moved