WHY
This issue is happening because we are restructuring the Plus plugin repositories to follow the format of all of our other Python repositories on github, so that we can distribute them more easily.
This change breaks the Honeybee[+] update component as now the name of the downloaded files are different. You shouldn’t be worried though as the fix is quite easy.
How to fix it?
Download the updated update component from the honeybee-grasshopper github. Copy the file into your HoneybeePlus folder at (C:\Users[USERNAME]\AppData\Roaming\Grasshopper\UserObjects\HoneybeePlus) overwriting the previous component. Then, restart Grasshopper and your new Updater component should run without issues! 
Let us know here if you face any issues.