Sorry for the hassles.
We had two bugs that have now been fixed in 2.1.2. If you are on an older version, please update to that one.
Also, please note: The new version uses a new display system that more tightly integrates with your theme automatically. Your old templates may be interfering with that. You can still use them if you like, but you may want to downgrade to 2.0.5 to continue using them. The newer versions are page-based, which means that there's less styling and work for you to do now to make it look nice.
We also support custom CSS files that won't disappear on upgrade as well. Please see these links for more info: