Thanks for all the suggestions. A bunch of those VSTs are FX's from CW anyway, that are hanging around for possible compat reasons. Some are from Sony/Acid that I probably should dump, but I'll keep the PG stuff as I just upgraded BiaB. Nothing like loading a song and getting missing effects msgs, and then trying to locate and re-install some FX that I rarely use. I actually encountered this loading the audio demo and not correctly matching the Boost11 FX. I had to delete and re-insert it to get even the demo to not throw an error on loading it. At least SPro did show the GUID it expected and hint at it being a missing FX, though the error msg showed the same GUID for the missing and recommended plug-in, so I'm still confused about what it was unhappy with. I don't think I've ever DLed an FX package and even actively avoid the IK MultiMedia stuff (AmpliTube, etc) since it leaves leftovers all over my system and I don't want their 'trial' stuff anyway.
HDD space is cheap, time is expensive, so I leave them there. I've pruned my VSTis down to like the 50 or so I actually use every 6 months or so. Half I know and love, the others I'm learning and have potential. Sadly, there are only about a half dozen MidiFX. I don't use aFX much, so leave them be if they aren't a problem as I won't ever get around to comparing them, but don't want anything to break due to something I 'cleaned' up.
After some reflection, I suspect that there may be some permission issues, but maybe not. So, I'll check those dir's of interest as well as update the VST scanner and Plug Managers to Admin status. That might account for the pref getting reset which I've seen CW do when it finds an apparently invalid dir pointer.
I'm aware of DXI issues and registry hell, but thanks for the reminder. I have most of my DXIs converted to VST shells anyway since some other DAWs don't like DXIs anymore. No VSTs get converted to DXIs. I sure wish CW would use .ini files rather then the rats nest that is the MS Registry.
To my understanding, the location of the VST folder isn't too important unless there are file permission issues which is a different problem anyway. Win8.1 is different, and apparently W10 will be even more different. I come from a Unix/Linux so I'm appalled that Win8.1 has only a global hide file setting, and can't be controlled on a file/dir level. But that's OT and I'll not discuss inheritance. A lot of my other programs already use the existing VST folder location, so I'm not going to just change where it is and break a half-dozen other programs. They don't have any problems with its current location, and I don't see anything suggesting SPro does either. Most of my 'drv's' are actually partions of a 2GB HDD anyway, so shifting anything to a 'different' drv doesn't mean much unless I go to one of the other internal drives or an external USB. I've been really surprised at how fast those big USB3 drvs work, but had one fail in about a year so they are offline devices mostly.
I suspect that there is something else going on. If I knew what, I wouldn't have started this thread. But, the browser can find my VSTs via the VST scan util, but it doesn't work with the Plug-in manager as it should and use my layouts, as advertised, today anyway.
As I explained, this is an install on a new machine, so it isn't overlaying anything previously which may account for some of the poorly chosen defaults (which should have a first-time installation option screen, rather than just performing some 'default' install profile). I did notice that the manual install's did not need another Reg/SN check, though obviously I was setting the locations manually so I can't comment about how well those were preserved between installs. I also 'discovered' the C3 uninstall option via right click today, but am now very gun-shy of the C3 as it remains full of surprises and lacks options screens, menus, and setup info. Unfortunately, it appears to be the only path to CW DL's and just wildly jumps off into an unknown installation once it gets the files. Unattended yes, what I'd like NO.