Running Blender 2.79 on Kubuntu Linux 18.10 and I encounterred the following problem
spent half a day modelling a part for 3d printing
it's a single object in the scene with many others
when I try to export it , blender always creates a non usable basically empty file with just 84 bytes when I try to export STL.
I tried exporting to other formats and then opening them back up in Blender ... doesn't work ... exporting to .obj gives a 92 bytes "empty" file, for example
other objects in my scene export just fine
just this object that I edited won't export (yes, i have terrible geometry and I've used a couple of applied booleans when making it but surely it MUST export at least SOMETHING, right ? )
edit: tried creating new object ... doesn't even export primitives ... only objects that were already in the scene export sucesfully edit: found a workaround : save a copy of entire scene, delete EVERYTHING except that object and then when I export, i uncheck the "Selection Only" and it works ... so apparently the "selection only" has something to do with it ... any ideas on what could be causing this ?