Greetings.  I totally forgot the sonar pro > vst plug in path for Spectrasonics Omnisphere.  It's asking select folder for "where should the DLL file be installed if you use only (RTAS) Digidesign plug-ins.  I just do not know where the correct file folder path should be located.  Thanks for your help.
 
-LWD
 

Oy, I don't know the answer for your RTAS question, but I do remember that Spectrasonics vsts (I have all 3) are finicky, and if you screw up and put the STEAM or other XXXXX folder on the C drive it is a pain to move the huge folder to a secondary drive and then have the plug then see the correct path.  Don't be in a rush...read everything you can before installing Omni.  Sorry I can't be more explicit.  STEAM is in my Samples Drive and the .dll is in C: in a vst folder.