[Sonny Ray] >> There's several plugins that come with Nectar2. This is how they're noted:
iznectar2.dll


Hi Sonny Ray,

We tested Band-in-a-Box 2015 with Izotope's Nectar 2, and it's working fine for us with Band-in-a-Box 2015 with jbridge. That's both the 64 bit version and the 32 bit version.

Note that the name of the DLL to use for the 64 bit version is iZotope Nectar 2.dll (not iznectar2.dll as you noted above).
The Nectar Plugins come in various plugin types, including
"VST" : iZotope Nectar 2.dll (this works in Band-in-a-Box 2015, including 64 bit and 32 bit )
and "VST 3" : iznectar2.dll (this is a 'VST 3' format plugin, so not supported at all in Band-in-a-Box


Band-in-a-Box supports VST plugins, but not "VST 3" plugins. Most companies making VST 3' also make a VST version (as Nectar does). You can read about other software users (like Reaper) discussions about VST 3 here: http://forum.cockos.com/showthread.php?t=118616

Have Fun!
Peter Gannon
PG Music Inc.