I have installed Zimbra Desktop 2.0 beta 2 version. everything is working fine so far except preference. One I click on the Preference option it is showing ok, but whenever I am choosing any option ( e.g. Import/Export) it is getting disconnected. Even if I click on the first screen of the preference (i.e. Global) the same is happening. Is there any bug with it or the problem is only with me?

Please help me out. This is very important.