Hello,
I had the exact same problem. Currently you can’t have the libraries or cache on your Facilis volumes.
you can have your media there, just not the library or cache files. move those to your local hard drive and things will render and export just fine.
This is major flaw in Facilis Shared File System, one I hope they work out soon. My issue is the render files which are now being written to my local drive, are many thus taking up a large amount of space.