Apologies if this is categorized in the wrong project, I was confused as to where this may lie.

I purchased the world "Rising City" by GlowfischDesigns a while back and successfully completed it. Minecraft had been uninstalled for a while so when I reinstalled there were updates to multiple packs. "Rising City" downloads and installs onto my computer, seemingly without a problem, but when I go to generate the world, the marketplace prompts me to update the pack instead of its usual "Create This World!" When I click "Update" and then agree to the download by clicking "Download," nothing happens. It just goes back to the marketplace without downloading or updating anything, while the prompt to "Update" is still showing.