I used N-jector and the game launched but then crashed shortly thereafter (i didn't even see the Nexon logo, etc.)
Win 7 32-bit
*EDIT* I even tried D-Jector and PerX to no avail. It shows the black screen then just as quickly closes down
*EDIT 1* I tried it like 5 times with PerX and the game launches fine, however the hack menu doesn't pop up when I press insert.