Same problem here. I suspect that the problem has to do with external/networked drives. My library is on a NAS. I`m on Windows 10. What`s strange though is that the update library function was working when I first installed Kodi 17
16:42:07.981 T:7812 NOTICE: VideoInfoScanner: Starting scan ..
16:42:07.981 T:7672 DEBUG: CAnnouncementManager – Announcement: OnScanStarted from xbmc
16:42:07.981 T:7812 WARNING: VIDEO::CVideoInfoScanner::Process directory ‘X:\Films\’ does not exist – skipping scan.