reatune behaving differently in V4 vs. V3

was checking out V4 last night (a portable install as i still use v3.76 for daily work) applied reatune to a track to fix a wrong bass note. when choosing "apply fx to selected items as new take," the new rendered item is waay out of time (quite visibly behind the original take). opened same project in V3 and repeated above steps. after "apply fx" render, all is in perfect time as it should be. any ideas?

Well Funny you should say this, but I've just not 30 minutes ago done a set-up for a mix on an old track which requires all of the instrumentation re-done. This is the first Track I've worked on which has Vocals recorded for some time. I quickly put Re-Tune on the Track in Automatic mode so I could at least Listen to the Out of Tune vocal track and bang it was Delayed quite badly. Changing my Audio Latency setting appeared to Alter how much it was out by almost as if there was no plugin delay compensation happening. V 4.15 x64 on OSX Anyone else noticed anything?

Damn Looks Like I might have missed the Live Input Option on Tab 1 (The one Tab I never use!) I'll check this out tonight. Hopefully that's all my issue has been. And hopefully that's the solution to the OP's Problem too.