Im running w7 ultimate x64, with sonarx2 x64.
I have waves v9 bundle x64 and NI massive x64 perfectly installed and running.
I only let sonar scan the folder programfiles/cakewalk/vstplugins because I want to keep ONLY x64 bit plugins. Everything is perfect.
But:
Many of my other synths and plugins that I use are x32.
Any advice on installation and folder scanning for sonar on that old x32 plugins I have??
thanks!!

I´m installing all my old x32 plugins in folder programfiles/cakewalk/vstplugins and not in programfilesx86/cakewalk/vstplugins.
Everything seems to work fine... Am I doing something wrong when changing the installation folder from programfilesx86 to programfiles while installing?? Im afraid this will cause problems someday... I think that all the x32 plugins MUST be installed in programfilesx86 folder... Can anyone help me clearing this out? thank you!

No need for that at ALL. I have all my plugins at the root of my D drive, which is an SSD. I have two folders, one called Vstplugins 64 and one called Vstplugins 32: the use of those is obvious, I think.  I only let Sonar scan the 64 folder: the 32 folder is only there because some installers insist on installing a 32 bit version...
 
Anyway, you can pick any folder for Vst's yourself. You might as well install them in a folder called Donald Duck on a Z: drive... it doesn't matter at all, as long as Sonar knows where the folder is! There is NOTHING magic about the folder and its location itself!

Thanks so much.
What im doing is: ALL my plugins (no matter x32 or x64) are installed in programfiles/cakewalk/vstplugins.
Thats all, sonar x64 itself tells me which ones are x32.
I´m having no problems at all (yet). Cant believe the blue screen - bitbridge whatever **** hasnt happened yet...