The section you posted this thread in (before it was moved) was in the GMS hack section. If there are certain Maplestory sections that don't have sections here, then it'll be released in that section.
Anyways, don't run maplestory in compatibility mode. The error you're getting is because you are in compatiblity mode.
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No input founded? Maybe a resolution issue? Maybe you should let MapleStory load (while you're on the black screen) and when you hear that theme, then hit CTRL + ENTER. It will cause your Maple Story to go into windowed mode. You should be able to play after that.