Two white stripes on the blue background have gaussian blur applied to them, but the effect is invisible (unless I reduce Document Raster Effects’ Resolution). The CS6 version is throwing you a warning it’s not enough RAM to apply the effect. The latest version just says nothing, it just calculates it, shows the progress bar, but doesn’t apply it (I checked this with the All the Warnings reset also).

This same file has another problem, unfoldable layers — reported here: http://illustrator.uservoice.com/forums/601447/suggestions/46794262

The test file is derived from the original provided by Glitschka Studios.