First of all, you will need DirectX9. Second, get AppLocale for the Eastern Language but make sure you download the East Asian Language from your Windows CD-ROM. Hope this helps~
I downloaded MikuMiku Dance multi edition and it used to (half-way) work. Because of the problems I had with it I got rid of it and go the single model edition (just miku). After a bit I decided maybe I was doing something wrong so I got the multi one again and also downloaded the pmd editor so I could mess with their clothes. I couldn't get the modles to oen on the pmd editor and so I deleted it. Then I couldn't open MikuMiku dance anymore. I deleted the multi version again and then downloaded the single version. That one won't work either! I even tried downloading and opening pmd editor again and it won't open!! ...What do I do?! D=