From time to time, we update our version compatibility table.
So you need 10.4 plugins if you want to use:
* Cocoa target
* Console targets with pictures
* REAL Studio Web Studio
So if you are using REAL Studio 2010r3, we recommend to upgrade to current plugins to keep you away from some trouble.
For example we recently discovered, that plugin version 8.2 to 9.2 are not compatible to REAL Studio 2010r4 beta versions.