Libretro has been disabled since build 1226. Any idea when this will come back into play?
The addons need to be rebuilt - hopefully this will happen in the next week or so.
Texture Cache Maintenance Utility: Preload your texture cache for optimal UI performance. Remotely manage media libraries. Purge unused artwork to free up space. Find missing media. Configurable QA check to highlight metadata issues. Aid in diagnosis of library and cache related problems.