It's a known issue (reported in RPi thread), I'm looking into it - affects Yatse too. Existing connections should work though, only seems to be an issue when creating new connections.
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.
