YPool posted an update to their share formula, and now I can't connect through 7.1 or the rdebourbon versions. They say they recommend mums v4, will try and see.
rdebourbon's version still works, pool was just down for a minute while they changed things. I would love to see an 'unofficial' version that reads the share value from the server too

Can confirm, back on rdebourbon, but I'm concerned that it is the version they tweaked the share value for and will not be generating as good a return because it finds smaller primes. Any thoughts?