2.3.4 is the latest version.
Mod Patcher 2015 got a new Load Mod... button for those who have problems with drag & drop method.
 
About mod files
New Duckbar / Mod Patcher 2015 loads new .x4mod files. These mods are designed exclusively for SONAR 2015 (Artist/Professional/Platinum). Old .x1mod files can be applied for any version from X1a to the latest Platinum. However, all .x1mod mods are not 100% compatibile with SONAR 2015, especially large themes like Dark Side, Black Label, etc. Smaller add-on mods work great in SONAR 2015, too.
 
Most SONAR 2015 graphics incompatibility in the .x1mod files is in the new control bar graphics. In SONAR 2015 there is completely new design and the old graphics are misaligned. There is, however, a workaround: I have created many SONAR 2015 contol bar add-on mods (check sonarmods.com downloads area - there are new mod categories) which can be applied after an old mod to overwrite wrong graphics resources.
 
Official Dark Side and the other old themes are released in July-August.

I just updated Sonar and it killed Duckbar. We will have to install Duckbar every month but it's worth the effort.

I was running Duckbar without incident prior to the June 30 update. After the update the graphics in the control bar are mis-aligned.

What mod did you apply?

The Reindeer Yellowstone mod that says its for Sonar 2015 ends in x1mod so I changed it to x4mod and I was able to load with the new loader function.

I don't understand this weird no drag and drop.

I installed 2.3.3 (Dark Side) and haven't noticed any issues........will try 2.3.4. Thanks Panu!
 
Mike, I also had to search a bit through the settings to figure out how to use the mods.....(now that I've already done it once....it's easier.)   

Mesh, let us know how 2.3.4 goes.

Will do BD......Dog Farter Father of Bass!!

Mesh
Will do BD......Dog Farter Father of Bass!!

Dog Farter? LOL My cousin had a Beagle that could clear a room faster than any creature in history. Always wondered if he was thinking, "pull my claw." Anyway, must have been a typo, roit, Mush?

My problem has been and still is that drag and drop just doesn't work since Sonar Platinum. I think that's why Panu made a version (2.3.4) with a little load button that opens a file dialog in which I can select a mod and away it goes.