I've gotten a number of people reporting script exceptions/errors when they try to launch Mamankyoushitsu/reach certain scenes in Mamankyoushitsu. By and large, this is caused when the game encounters a change in the script files for each route (like a script file that was in Japanese suddenly is in English). There is only one way I've found to solve this problem, whenever it occurs:
1. Close any instance of the game that may be running with the task manager.
2. Go into the folder where Mamankyoushitsu is installed, and access the 'savedata' folder.
3. Delete these three files: 'data999.ksd', 'datasc.ksd', and 'datasu.ksd'
4. Restart the game.
This will erase all of your savedata for Mamankyoushitsu (you can skip text by holding ctrl to get back to where you were quickly), but will make it so that the game will use the translation patch for all translated text, provided the translation patch is properly installed. ALWAYS USE THE MOST RECENT TRANSLATION PATCH. THIS POINT IS MOOT BECAUSE I ALWAYS OVERWRITE THE OLD TRANSLATION PATCH WITH THE NEW ONE. ALWAYS RE-DOWNLOAD THE TRANSLATION PATCH AND PUT THE patch.xpc FILE AND patch FOLDER DIRECTLY INTO THE MAMANKYOUSHITSU FOLDER (when the game isn't running).
As some people have also had problems with getting the Bad End and not realizing it (my bad; I didn't translate it), I have updated the Translation patch with the Bad End. It triggers when you do not select the proper choices to enter any one heroine's route. Here you go:
If you install the patch and get a script exception or other error, see the above guide^
Further translation of Mamankyoushitsu is still on the shelf. Feels batman.
Maybe someone should post a guide or something to this game....