Menu sidebar is blank AND can't get rid of timer at bottom

Hi

I'm updating some 2011 courses (made by someone else) at my work. Though I've had a few little hiccups with some files, all of them have previewed in exactly the same format. However, I've now come across one with a couple of issues:

The original course which is still active on the LMS has a menu sidebar and no timer down the bottom. Now a blank space appears at the left where the menu sidebar should be and there is an annoying timer running down the bottom. I've tried creating a menu sidebar based on one of the tutorials, but it hasn't had any effect. Ideas? Been in the job two months and have just learnt Storyline reasonably comprehensively, but Presenter is still a little foreign and I can't find the answers easily in the forums and tutorials.