I don't mean to be rude... but that was a stupid reply.
I run in 64-Bit because I can no longer run in 32-Bit. That's how many plugins I'm running at one time, not to mention some of the newer plugins are only 64-Bit. The reason I still use the 32-Bit AU Bridge is because I still use some of the older 32-Bit plugins. Some of them are discontinued/Legacy products that are invaluable to my production arsenal...
Another reason I cannot run 32-Bit is because it crashes upon start-up due to the immense amount of 64-Bit AU plugins initiated.
I don't think I can even say "thanks" for trying to answer my question because I'm embarrassed for you, at your response.
Can anyone else formulate an educated response? I see that no one has correctly answered this question posted several times in the past by others suffering from the same dilema...
Here's the educated response.
If you intend to run in a pure 64 bit mode, make sure all your plugins support that mode.
If not, you will have problems.
If you intend to use 32 bit plugins that DO NOT work in 64 bit mode, be ready to boot into 32 bit OSX and disable the 64bit plugins to be able to do your work or stop using them. It is that simple.
Your thanks is not necessary or desired. This is not brain surgery.
I'd like you to use Vienna Ensemble Pro 64bit plugin to communicate with a 32bit Vienna Ensemble Pro Server. You could run your 32bit virtual instruments or 32bit audio FXs on that server.
P.S. You could run that server on the same computer for running Logic Pro 9 or X.
P.P.S. This method also works with Logic Pro X, AVID Pro Tools 11, etc.
P.P.P.S. There might be other cheaper choices available (Vienna Ensemble Pro is a little bit expensive ... by lots of means).