What VP version started the project? What version is running after the update? If the sequence plays okay, despite the incomplete line, you're probably good to go.
It is wise to complete your work with the version used at the outset. Recent improvements may limit backward compatibility of some effects. This might relate to your issue.
Let someone take a look at your project, and they will help. Follow instructions here: http://nch.invisionzone.com/topic/23659-tips-for-getting-help-on-this-forum/
Be sure to SAVE AS PORTABLE PROJECT, not SAVE AS PROJECT.