The problem is the ribs join the outer solid at a knife edge and solidworks doesn't like that in this instance. Extend the ribs in sweep 1 by 0.1mm and have the outer profile in revolve 5 overlap by 0.1mm back inwards (combining will eliminate the 0.1mm overlap). Once that is done it works fine.
Probably also worth looking at constraining your sketches for good practice. At the moment in sweep 1 the profile if floating.
Ilya,.. it's creating a ztg,.. so, choose the edge of the rib, not the intersection (middle). (image attached)