You're saying that the export is not the same as preview? Tested it in the latest version? For licensed users upgrades are free for up to six months. After that, VP will continue to fully function but a fee will be required in order to register the newest.
Let's see the project. Here's how... http://nch.invisionzone.com/topic/23659-tips-for-getting-help-on-this-forum/
If it contains sensitive material you can link it in a personal message (PM) to me, via the envelope above. Be sure to FILE|SAVE PORTABLE PROJECT AS, not simply SAVE PROJECT, and don't forget to share it.