Can someone help me get this .stp file to a solidworks file?

I been trying to open this file for a while now but i couldnt.

When i try to open it, sw does  an analisys but when it's done, sw only open a empty assembly file, with no operations and no solids.

the file size is 14mb,

my pc is 12 gb RAM 64 bit

SW 2012,

Can someone convert this file, or give an advice of how to do it?

Thanks

SolidworksImport export