Yesterday I was working on a large assembly and when I added a new part. Went to sketch the profile and needed to add some relations to that sketch.
When I select the add relations command, it will let me select the lines to add relations to, but does not present any relations to add to those sketch lines. Is there a option I may have accidentally turned off or one that could have turned itself off? Seeing as I would remember turning off a setting. Thanks for any help in advance guys!

Update:

I went back to the sketch and without selecting the "add relations" command I selected the line and arc I needed to add relations to using the shift key. As soon as I did that it brought up relations I could add on the left hand tool bar. I used this method for the rest of the sketch relations I needed and it seems to have worked. Odd because I had to add relations the other way up until this point.