Oh, I think the sprite that failed to load is a tree that I removed in a recent old art purge, but I already made a replacement for. I'll check if it's showing properly.
As for the shards I guess I forgot to update the help page when I added the map that includes the 8th one.
Thank you for the feedback, and for taking the time to collect all available shards. Most people I had playtest this game stop long before that.