Sight / Progress Line

I would like to request for assistance with the difficulty I am encountering right now. I have doing update to the project I handle. I have provided the actual start and percent complete. I have also schedule the project to the required date. The problem is, when I try to show the Progress Line, I have click View then Progress Line, the progress line is off and I cannot show the progress line. Can somebody help me with this.

Thank you very much in advance!