i have a major problem. When i start a new sketch and i start a add some dimensions, the first dimension i add isnt appear and i cant add another dimension. wherever i click in the drawing it appears the box of the first dimension i added. Look at the picture i added!
I've seen similar problems when the units are not what you think they are. (you think you're working in mm, but SW is set for M, resulting in the part being so big that you can't see the tiny font of the dimension value)
A quick little test: measure the distance between the two points to verify you're at least in the ballpark.