Not sweeping... damn..

Hi everybody... 

I have a trouble with a some very simple sweeps (sweep 1).... as far as I see in the discurssion forum.. the sweep component is "very tricky"... but the curves that I´m working with are so simple (lines and arcs) that I don't get it what's the problem with them.. 

Thank's a lot in advance for the interest in this "simple" issues wtih beginners as me..

Best regards