Partial write issues for meta data



I recently switched my Plex Media Server from running on Mac OSX which ran great to my new NetGear Night Hawk AC 7200 wires router. Install and everything went great but now I'm having issues downloading meta data for posters. Weird. I run several times and some movies load the meta data, when I re-run the meta data scan some of the movies that had posters lose them and others that didn't have them. If I try to upload a pic file like a jpg it says it has a write issue. The USB drive I have connected has open all write permissions to I'm at a loss. Has anyone run into this and found a fix?