Don't forget that every time you change from one sd-ext script to another, you need to make sure you completly removed the script you were using. Or else they will probably interfere with one another.
That been said, you could also try mounts2sd (version 2.2.0 worked better for me than the latest one though). Also, I had problems using the formating tool of CWM. When I formated using TWRP it worked better. So changing the formating tool you are using might also help.
But I'm just a noob, so don't take to seriously what I'm saying. Good luck.