I had some problems so I had to shift my stuff from a Windows 7 desktop to Ubuntu 12.04. The patches for both Question and Answers arc worked flawlessly on Windows 7. However, after the shift, Question arc is still fine but many of the character sprites are missing from the Chiru version. Following characters' sprites went missing -
Lion, Rudolf, Rosa Ushiromiya
Willard
all of the Siesta sisters
Sakutarou
Virgilia, Ronove
Shannon
Beelzebub, Asmodeus
Zepar
Before shifting, I compared all the file sizes from the Windows one to the one copied in Ubuntu but didn't find any difference. Perhaps it is Ubuntu exclusive glitch? I hope this wouldnt be much time consuming ^^