I had the same problem a few months ago. it seemed to happen after adobe reader updated to version 9.0. I found a work around of opening adobe reader first prior to opening LCD (Version 8.1 ES). Then the preview worked great and it stopped crashing. It happened with a few different forms. Eventually the problem went away, dont know what cleared it up... But I do recommmend opening reader prior to opening LCD.
I have had the same issue with a twist. I can open forms locally however the users that need to open the forms use adobe 9 within a citrix environment. When they click the form it opens for 2 seconds and crashes no error is thrown. Any help with this would be appreciated. We are using adobe 9.0 and Live Cycle Designer ES 8.2. My email is firstname.lastname@example.org thank you.