Online ratings of a movie clip causes error

[I][edited from support email][/I]
I have a study that involves a movie (mpg) clip and I would like to use the on-line rating option with the movie but am having a problem getting it to work together. The movie will play as a movie option but will not play as a backvideo for the on-line rating option when I select that option and input the file path for the backvideo, I am using a 10 point scale and using the whole computer screen so my parameters were (p10,w-1) and I kept receiving an error message when executing the program.

I took a look at your questionnaire. The problem, I think, is that you have specified the movie as a BackVideo directly on the Online Rating item. You should have the movie as a follow up item. The Online Rating item simply tells MediaLab to provide the rating method for whichever item follows it.