Thanks for that Willy.
I was going to try that, but it says something about losing all your settings. I wasn't sure if it would still know that I have Platinum installed when I logged back in.
It's fine now. I'll hide these things again - I just wanted to knowhow to get them back if I ever need them...
EDIT: Actually it did "forget" that I installed a couple of things. I only installed SONAR, docs, and the Anderton FX. The SONAR was still "green" - but the other two were "red". I just re-installed them.
Also - it must have these things cached somewhere because it didn't need to download the docs and tutorials again, it just extracted the file. (I'd deleted tutorials myself - so it definitely has them cached somewhere.)