Which of these have 32-bit versions?  How do I install the 32-bit versions without clobbering the 64-bit versions that are already installed?
 
 

All of them. Run the installer manually and select 32bit. IIRC, it will pick up existing config info from the 64bit registry entries (but I believe it still overwrites all the samples and programs). I have to ask why install 32bit RPro? The only reason to install 32bit versions of these synths on a 64bit OS is for legacy projects which will not load in a 64bit host. RPro is too new to have that problem.

For use with P5 ...
 
 

Keep in mind some RPro programs larger than 2GB. I believe the programs will crash a 32bit host. Also might be a little tough without multi-core support. I would stick with the two synths which were around about the same time as the DAW.

Good point, scook.  Thanks for the info, BTW

All set with Rapture & DimPro 32s.  Thanks again scook.  SSO sure is handy for grabbing registration codes and such.
 
 

Yes, I wish there was an easy to to export the account information to have a backup on my machine.
 
Now that you have performed 32bit manual installations, should DPro or Rap get updated, to get the C3 indicators to go green again both C3 and manual updates must be run.