Good to see that you have resolved your calendar issue. I had the same problem previously. But then again, I had many other Force Close issues. I figured I didn't clear the cache and wipe data enough times when I flashed this rom. So, I wiped data and cache several times and reinstalled the ROM. Now, I have absolutely zero issues with it. And I feel this is smoother and gives better battery life than Eclipse, which drained my battery reallly fast.