Funny, I experienced this problem a couple of times, too.
Actually, I never managed to get recording running on my machine. Either it halts shortly before 100% or I get an “engine crashed” error message.

Currently, I cannot reproduce this (I just get crahses instead).

I want to record this game. But i have 14 fps when i use fraps

Don't know too much about fraps, but from recording video under linux, I found that things that can improve video recording framerate is to use a smaller window size (kind of obvious, but, might not occur to people - can zoom out to catch more of the scene in the game) and to turn off compositing in the window manager which can help depending on your graphics card/driver...

The fact that recording is failing kinda sucks, but I've had mixed success with it myself :-/ I think the lib we are using is a bit unreliable.

I started use obs instead and it works fine. the quality is not the best but it works.
https://www.youtube.com/watch?v=bF0023QjyTU