printing in air

[stevendeman]

hello,

i am new in the world of 3D printing. i have a leapfrog HS printer en working with simplify 3D.
i try to print a cup witch has a thin wall.
the base of the cup is printing well but when the printer has to print the thin wall it looks like he is missing some steps and then he is printing in air.
between the outher and inner wall he prints infill material and i think that is the problem it's to little. when i set infill to 100% he doesn't want to do that.
i want to print a massive wall and my printer refuses that.
see attachement