I have a Problem to getting bove working in combination. For Dr. Damage the tooltip (on button) doesn't Show up since I'm using ElvUI. Has someone a workaround or an addon that is compatible with 3.3.5a and has the same feature and is working with ElvUI?
I also had problems using this version, try using Dr.Damage for version 3.3.3, I heard there ain't any changes on skills scaling for classes since this patch. That worked for me.
Link for download: https://www.wowace.com/projects/dr-damage