I have two plugins on my vocal track.  In the FX Bin, I click one and it opens.  I click the other and it replaces the first one.  When I move it to see if the first one is under it, nope.  So when I click the the first one again, it opens to wherever I moved the second one.  Kinda frustrating!  Any ideas how to fix this?

It's a new feature you paid for, check preferences in order to revert to previous behaviour (maybe VST settings under that, can't remember Sonar not in front of me right now).
 
EDIT:

Here is a link I googled with answer:
http://forum.cakewalk.com/Platinum-issue-only-a-single-plugin-pop-up-m3153854.aspx
 

It's actually a very cool feature, and you have a choice. If you want something to open in a new window, in addition to the preferences option you can hold down Ctrl while double-clicking on the label in the FX bin.

Or hold ctrl key as you select the fx or drag and drop into fx bin.

Anderton
It's actually a very cool feature, and you have a choice. If you want something to open in a new window, in addition to the preferences option you can hold down Ctrl while double-clicking on the label in the FX bin.

I thought it was ctrl+click, so ctrl+ double click works too?

I stand corrected, ctrl+click is preferred - my muscle memory is still doing double-clicks to open up UIs from the FX bin   Ctrl+double-click works too, although I guess the second click does nothing useful.

Thanks, got it sorted out!