Space between rows is missing after second row on mosaic layout

[orsaweb]

Nanogallery2 mosaic layout, 13 items per row, 5px gutter height and width. But after second row there is no space between rows (between every 13 item)

Url:
https://lucewed.com/fotograflar

[sfolador]

We have the same error on the mosaic layout. The first bunches of pictures are OK, and the third bunch is without a space.