Cannot update content in Marketplace

I have items in the marketplace that are flagged for an update (texture packs and mashup packs).  However, when I click on the "Update" button nothing happens.

This does not affect new content that was purchased on my Windows 10 machine.  Those items showed up with a "Download" button on them.  Those downloaded and installed properly.  It is only the items marked as "Update" that are not working.