The problem is, that I've decided that I needed more animations for my models, but after exporting it to FBX the mesh disappears. The models have been set up in Unity with all their scripts, and are working as they should, until I export from the original Maya file with the extra animation again. The FBX works fine if I drag them onto the scene, but the ones already there, disappears. I have tried to reconnect the mesh, and even tried to make a new one, but its still the same, everything looks normal, and is working, except for the mesh not being there!Anyone have a clue?
(BTX, I export to FBX for several reasons, it is faster, and I need to be able to use different programs to open the files, mb is a "nogo")
One reason for disappearing might be that you added some sort of vertex animation and not bone animation. Another could be that you are not using the right fbx version. The latest versions are good for static geometry but I noticed some problems with bone animations. Another (unlikely) simpler reason is that your object is imported and it displays a missing mess only in hierarchy but exist in project tab.
I experienced once what you describe but from 3dsmax and a max file I reimported the file as fbx and it worked, I didn't file a bug report because I didn't know exactly what I did. As i remembered it was the period that we upgraded to 2011. so I had the file from 2010 and resaved in 2011 and there was a problem just for one file. Good luck