I just upgraded the plugin to 2.4.1 (which is the current trunk) and now it's throwing js errors:
uncaught exception: [Exception... "Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE)" nsresult: "0x80070057 (NS_ERROR_ILLEGAL_VALUE)" location: "JS frame :: http://ajax.googleapis.com/ajax/libs/prototype/1.6.1/prototype.js?ver=1.6.1 :: anonymous :: line 1724" data: no]
element.attachEvent is not a function
Because of the above, Lightview no longer works. As soon as I downgrade back to 2.3.6, it starts working fine.
My Lightview Plus settings are: yes/yes/yes/no under General Settings.
I'd be glad to help you trace the problem - just email me and we can IM.