Can't open MapleStory

When i open MapleStory, i get this error (see screen)

I'm new in MapleStory, so maybe this is usual when there is an update.
hope anyone can help me,

Scandax

edit: I tried again, and this time i get another error:

Abnormal program detected

<folder where i installed MapleStory>

the game is in its Maintenance. w8 until it ends