Every video I export after making a line test in Pencil Check Pro seems to cause this vertical line on both sides of the video.
No matter what I try I find these end up staying. 
An example is my most recent post here. (watch the video)
http://briandblanchard.tumblr.com/
Any tips on removing them?
Does your image fill the output resolution you are using?
Please post further Pencil Check Pro inquiries in corresponding forum.
http://www.toonboom.com/support/forums/pencilcheckpro/