kakerasky

I just purchased this game on DLSite and followed the instructions, from what I can tell, perfectly. This includes the soft-denchi DRM passcode input it's asked me to do. And yet, the game freezes on start-up, showing a "Not Responding" status until I close it down. I've tried running it as admin, in compatibility mode in both XP and 7. and I'm still not having any luck. Any suggestions?