Did you try using a clean client? If your edit is in Pleione.dll it can easily cause something of this sort to occur.
Edit: So I tried logging in, turns out same thing happened to me, so I tried with a clean client, no go, tried logging into Combat Arms, no go, Maplestory, nada, Forums, still nothing. This leads me to believe it is a screw up on Nexon's part (no surprise there), and seeing as there is no BAWWWWWWing on Nexon forums by peoples alt accounts, we can assume we are screwed
.
Edit2: It could also be an issue with internet permissions etc. I'll look into it when I have a chance, my friend is here right now.
EditFINAL: Login server is broken, it is now popping up on Nexon forums (this issue that is).
It is fixed
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