I'm trying to get a p2pool setup going using the Windows binaries from James. From what I can see, p2pool is running properly (I see it reporting on the blockchain), but I cannot connect to it with my other mining machine. I'm trying to use my regular vtc wallet address as my username, not the p2pool  address that appeared after install (actually I've tried both addresses).
"url" : "stratum+tcp://192.168.10.117:9171",

I  get errors related to 'json stratum auth failed' and i'm not sure why. What am I missing?