I can confirm changing the folder name from SillyTavern-CacheChunker to CacheChunker fixed everything.
I'm unsure if this is an issue inherent with all downloaded extensions, or if it's specific to CacheChunker. If it's not specific to CacheChunker, then kindly disregard.
I had this issue on my SillyTavern after installing the extension where it was providing a red error message regarding my template. After some research, I discovered this issue: https://www.reddit.com/r/SillyTavernAI/comments/1bw9056/is_there_any_way_to_perform_context_recalculation/
I can confirm changing the folder name from SillyTavern-CacheChunker to CacheChunker fixed everything.
I'm unsure if this is an issue inherent with all downloaded extensions, or if it's specific to CacheChunker. If it's not specific to CacheChunker, then kindly disregard.