something called "Command Center".  
 
Take note before using it:  (1)  it will not ask or warn about where to install , everything goes to C drive
   (2) it will NOT provide an Uninstall for installed programs.  (3) if you have to uninstall, you are likely to lose parts of older working installation
 
    
 
 

You Sir need to read threads before posting.
http://forum.cakewalk.com...spx?m=3191051&fp=2

And there are loads of other threads kicking around. Do we really need yet another thread on this?

Please edit out your derogitary comment, it is not appropriate for these forums. There are better ways of putting things.

the search software for the forum never works ... I looked for uninstall platinum, got nothing

There is written help http://www.cakewalk.com/Documentation?product=SONAR&language=3&help=Introduction.28.html#1435096
There is also a video about the app on the download page https://www.cakewalk.com/Command-Center
You may notice the uninstall option on the image of the C3 on that page.

There is also google... I left an answer on your duplicate thread (for uninstalling).

Thanks for editing your post.

Further warning:   the uninstall of Platinum may affect installed vsts for an existing sonar x3 producer installation.  

Removing any version of SONAR can result in removal of shared items. Uninstalling a newer version will remove many more items because the newer installer knows it installed them. This has always been the case.

Ok at 3 hours and counting: the install for Sonar Platinum, downloaded directly, works just fine.    Politely asks where to put itself, picks up preferences from earlier installs. 

William try reading this  http://forum.cakewalk.com...-a-Guide-m3183900.aspx

scook
Removing any version of SONAR can result in removal of shared items. Uninstalling a newer version will remove many more items because the newer installer knows it installed them. This has always been the case.

is this also true of the demo (when it appears)? if i install the demo, and then uninstall it, it will break my existing sonar install?