Before you install dim pro, you might want to uninstall dim le first.  
Several years ago I had dim le installed first. Then when I installed dim pro the vst scan would only recognize dim le and dim pro was no where to be found. I guess the 2 dim has the same vst name so the scan would have to choose one of them. 

johnnyc323
I would install X3 Pro now except that my current computer runs on Vista which, I believe, is not compatible with X3.

You don't need to install Sonar X3.  Dimension Pro is on separate disks (or separate download files, whichever) and it will run on Vista.

musichoo
Before you install dim pro, you might want to uninstall dim le first.  
Several years ago I had dim le installed first. Then when I installed dim pro the vst scan would only recognize dim le and dim pro was no where to be found. I guess the 2 dim has the same vst name so the scan would have to choose one of them.

I've had them both installed together without any issues.

I was curious about the DP LE versus DP as well. I never "uninstalled" LE, and think is was replaced by DP (full version). It has been so long now that I forget the mechanics behind that one.

They are different plug-ins which can co-exist. It was common years ago to use LE to save on resources even when the full version was installed

Thanks for the clarification. I honestly cannot remember what I did, but I must have checked an uninstall someplace.

Also note DimPro and DimLE each use a different filepath for the multisamples, so you end up with 2 sets of multisamples.
 

It is possible to set them up to use a common set of samples.

Thank you all. So am I correct that if download my SONAR X-1 I can uninstall just the Dimension LE? I think that might be the best way to go if that's true.

There's no need to uninstall anything.  Just install Dimension Pro.
 
By the way I'm confused when you say "download my SONAR X-1".