Strangest thing, I have used 14.07 before, worked ok then.
But today I was tinkering with settings, and suddenly it keeps freezing as soon as I change to layer view.
I let an instance run for nearly an hour but no response at all from the interface.
Windows 7 X64, Intel Core i7, 16Gb Ram
If I remember correctly it started when I changed stuff in the expert settings, I was hoping to try the "only follow mesh surface".
Reinstall did not work so far.
After uninstalling all cura versions and only reinstalling 14.07 things are working better.
Could be concidence. Weird anyway. :-)