I haven't heard anything from Waves support yet - but I'll try this tomorrow (Saturday). I'll also check
c:\program files (x86)\waves to see if the older version is still there.
I'm hoping that after re-installing - that the vst reset plugins will fix the issue where SONAR is confused and looking for the old she'll file.
Moving the shell file has always worked for me - but not understanding what's going on (together with forgetting about the copy of the shell file from 2 years ago) - is what got me ;-)
I have a better idea now, thanks to the help here and some messing around - plus I know how to get back to my original working position of the Kramer tape plug - so I'm willing to dive in...
Still, it shouldn't be this hard to install or update a freeking plugin ;-)