I can't seem to run the game properly. Whenever I run it the game goes to full screen mode for a second, then returns to windowed with an error saying "???? (gibberish) ??????" When I run the english 0.9 version I get a similar error that says "???? Vehicle ??????"
This is actually quite easy to fix, and I was pretty surprised by the answer myself. Go to:
Control Panel => Clock, Language, and Region => Region And Language.
When you click this, a popup'll appear on screen. Click the Administrative tab, and take a look at what you see. You should see a box to click that says "Change System Locale". Click it and click the little drop-down bow. Select Japanese (Japan) and click OK. Don't worry! Your comp'll still be givin' you English. This just basically changed it the system could read Yume Nikki's original Unicode format. Your game'll still be in English, too. So it's perfectly safe.
You aren't quite done yet, though. Go to the folder the game is at, find the actual game (Should be titled "RPG_RT") and right click that. Run it as the Administrator every time you wanna play, and bam. You're set.
For ease of access, I'd put .flow's whole folder on the desktop. I've tried making a shortcut for it… didn't work very well. Just go into the folder and run it as the administrator.