After setting up 4 instances of VE Pro each with one instance of Kontakt (each holding one section of my orchestra) Logic Pro ran out of memory. There was nothing in Logic except for the connections to VE Pro.
That's right. With Activity Monitor showing a usage of about 400M (I assumed it would say something around 150M which is an empty project) I got the message, "Out of Memory." System had 6G left free.
I kept trying to use it and performance was so bad that I decided to quit testing. I got audio glitches at 256 samples in my audio buffer. After changing it to 512, performance was mildly better.
Also, loading a different Kontakt instance into the same VE Pro project (in other words, opening a different project) will cause Memory Server to go crazy. It won't let the Memory Server lose its RAM except on quitting (and even then not if you had tried to unload a Kontakt instance without quitting. )
It does work fine if you load up one instance and don't change anything. But then Logic (in my test) didn't have any memory to use. (even though there were 6G left free in my hardware)
So, if you have it working successfully, please let me know how to do that.
I have loaded my entire old template into Logic Pro 9 AND my new entire template into 4 instances of VE Pro (but not connecting the two) and everything works fine.