Nah you get a corrupt file error when your installation process /patch in any program, fails and taints/leaves useless a file.
You need to either, re attempt to install/patch (if you have windows 7 just timetravel your maplestory file back to a date previous to patch), or uninstall + delete all files from maplestory file and make a clean new installation.
wth man.... i tried uninstalling maple and re-downloading, and now its giving me an error while trying to download the ui.wz file. after i get the error, it makes me start the download over. "an error has occurred while downloading. please try again". i get, "[ ERROR CODE = -40 ] installation failed (11207,0)