[yt-users] Control of thread/program not returning to ipython after creating a plot

Hi all, I am analyzing some MESA data using iyt instead of a regular ipython. Everything works well except that when I make a plot with yt, control is not returning to the prompt. I have tried to start yt with different thread options (-gthread, -qthread, -q4thread and -wthread) but none of them worked. My version of yt is built with python 2.7.1. The weird thing is that it works smoothly with a regular version of ipython built from python 2.6.4. I would really appreciate if someone could help me to fix this. I would like to keep using yt and not have to change all my settings. Thanks a lot, JC