I use it with an N95-3. If I have SkyeQuiKey running at the same time as Psiloc Crystal Chinese, my phone has the same behaviour (crashes when I make a phone call). If I disable SkyeQuiKey that issue doesn't come up. I've contacted both Psiloc and Skyestream (the makers of SkyeQuiKey) about this. In the meanwhile, I just use one or the other. Not ideal by any means, but it works.
Receiving text messages and email in Chinese works fine for me.