Problem with extracting files

[Senpai Ken]

Okay so this is my first time hacking and it was going okay until I had 2 files left (data2 and data3). I've been letting the program run for almost 4-5 hours yesterday and today as well, but nothing really came out of it. It just got stuck in an endless loop (see picture 2). Am I doing something wrong or should I be more patient? All of the other files barely took 30 minutes. I'm trying to hack Koishiki Manual by the way.