silver-machine wrote:Hi
Just get rid of the Sampletank 3 engine.
You already have the sounds and when you put the Sampletank 4 engine in point to your existing Sampletank 3 files wherever they are.
That is correct. However, if you have an old project in a DAW with ST3 loaded but you have removed the ST3 plugin, ST4 won't magically appear in its place. If you really want to remove ST3 and want to have no worries about re-visiting old projects, you need to go into each DAW project and 'save as' any patches, effects chains etc you have set up yourself. Then, on the same instrument channel, you need to instantiate an ST4 and open your saved patch to check it works. Once you have done this for each DAW project you are probably safe to remove the ST3 plugin.
The ST3 app takes up a grand total of 4.6MB - I would probably leave it where it is.