With Blender 2.80 official release candidate and pretty much any version of crowdrender, I can not get my network machines to sync. I can find them and begin to sync but it always fails. Well mostly it fails, sometimes it will work if I just repeatedly hit resync throughout the day. The test scene is in a shared network location and all textures and dependent files are packed in to the scene.
I am maybe wrongly maybe correctly assuming this may be a network issue. When I install the add on , I get the start button and allow it through the firewall. I am running all the same versions on both machines I am testing with.