Works randomly since wipe, Sometimes it will upgrade but most of the time it will say its starting to upgrade and then tell you none of the blocks were upgraded !, Plenty of resources available so its not that otherwise you would get the error message of what resources were required.

Hmm, nothing seems to have changed that would impact the plugin, I'll run some tests

Still getting this intermittent error. have to resort to single item upgrade (hammer) instead of multiple