Did #xnsub (extranonce.subscribe) support get rolled into VH's latest build (Apr 30)?
I'm using it to connect to Nicehash but cgminer is giving me this:

cgminer.exe -o stratum+tcp://sha256.usa.nicehash.com:3334#xnsub -u 1xxxxxxxxxxxxxxxxxxxxxxxxxx
...
Failed to resolve (?wrong URL) sha256.usa.nicehash.com:3334#xsha256.usa.nicehash.com

I'm running a new 2Pac on Win10 64 on a powered hub. No other issues really. I can connect to other pools without the #xnsub tag just fine and I'm getting around 10gh/s at stock speeds

Using /#xnsub will let cgminer connect but Nicehash reports the worker as not being extranonce.subscribed.

Not sure if this is a cgminer issue, Nicehash issue, or a PEBKAC issue.