Anyone else using this? I have everything routed correctly. I am able to set up patterns and trigger any VST without any kind of issues but when I set a loop region in Sonar to audition variations in the measures I'm working on, the plugin does not follow the loop region. In other words, sonar will reach the end of say a 4 bar loop and go back to bar 1 as expected but Liquid Rhythm moves on to bar 5 and keeps going even if there is no midi data in the subsequent bars. I'm very new to Sonar so I'm sure I'm overlooking something but the manual is not very helpful in these kinds of special situations.

Unfortunately this is a known problem with liquid rhythm and probably will never be fixed.  I gave up on using it in Sonar long ago. 

Great! Makes it very difficult to work with because I keep having to restart everything on every play through. Thanks for answering my question though.

Does this also happen if you use the transport bar in Liquid rhythm (with it set to loop) and not the transport in Sonar.
Just a guess but Play in the main transport bar, is different than play in the Step Sequencer

The transport bar is not visible in the plugin version, presumably because the plugin expects the transport to be initiated by the DAW or plugin host. That is unless my copy is broken.