Well, I STILL haven't updated my UAD-2 plugs to the 64 bit versions.  They are working great for me with jBridge, and I didn't want to mess up my system, especially since I'm also still using X1 for tracking and some mixing.  (I still prefer track layers, too!)
 
How is the latest UAD software (8.0) working for you guys?  Any problems with either X1 or Platinum?  I'm thinking about doing the upgrade this weekend.  Fingers crossed.

Everything is fine for 8.0 and X2a. Which is my current preferred version.

I've messed around with the latest platinum build a bit, but was getting random crashes (that I don't think we're UAD related at all) and a few other slight annoyances... BUT these were primarily opening older versions of Sonar or bouncing back and forth between different versions. Maybe someone else who built a project from ground up in Platinum can comment more on it's stability w/UAD 8.0...

SONAR Platinum x64 and UAD 8.0 (x64 plug-ins only) working flawlessly here. Just make sure to only have the x64 UAD plug-ins folder being picked up and scanned by SONAR. Scanning both x86 and x64 UAD plug-ins will lead to erratic UAD plug-in behavior, as SONAR does not know which plug-ins to open (x86 or x64). Choose the VST plug-in path for x64 VST UAD versions and leave out the x86 UAD VST plug-in path  and you should be fine.
 
Cheers,
 
Billy Buck

I'm using Sonar Pt Cambridge x64 and UAD 8.0 (x64 plugs) and have had no trouble with them.

Billy Buck
SONAR Platinum x64 and UAD 8.0 (x64 plug-ins only) working flawlessly here. Just make sure to only have the x64 UAD plug-ins folder being picked up and scanned by SONAR. Scanning both x86 and x64 UAD plug-ins will lead to erratic UAD plug-in behavior, as SONAR does not know which plug-ins to open (x86 or x64). Choose the VST plug-in path for x64 VST UAD versions and leave out the x86 UAD VST plug-in path  and you should be fine.
 
Cheers,
 
Billy Buck

Excellent advice, Billy.  Just the kind of thing I wanted to know about.

SF_Green
I'm using Sonar Pt Cambridge x64 and UAD 8.0 (x64 plugs) and have had no trouble with them.

Cool.  I'm going for the update!

One thing I forgot to mention, since Win 8, 8.1 are not UA supported, it is best to run the UAD installer in "Windows 7" compatibility mode. Right click on the installer .exe and select "Properties" and then the "Compatibility" tab.  I also make sure that the UAD installer has "Administrator" privileges (bottom of Compatibility tab) and once installed, all UAD related apps (UAD Control Panel, Apollo Console if you have one) . In fact, all of my installed media apps (SONAR Platinum, REAPER, Vegas, Sound Forge, etc) have Administrator privileges for smooth updating and operation.
 
Cheers,
 
Billy Buck

I've actually just this last month sold my UAD 2 QUAD with v8 but had no problem running it on win 8.1 update 1 without resorting to running it in Compatability Mode.

UAD are becoming more Mac centric in my opinion, so I decided to pull the plug.

All good stuff. I never mentioned that my system is Win7 and 64-bit, and I don't plan on going to another computer until well into Windows 10, or whatever it will be.

Billy Buck
One thing I forgot to mention, since Win 8, 8.1 are not UA supported, it is best to run the UAD installer in "Windows 7" compatibility mode. Right click on the installer .exe and select "Properties" and then the "Compatibility" tab.  I also make sure that the UAD installer has "Administrator" privileges (bottom of Compatibility tab) and once installed, all UAD related apps (UAD Control Panel, Apollo Console if you have one) . In fact, all of my installed media apps (SONAR Platinum, REAPER, Vegas, Sound Forge, etc) have Administrator privileges for smooth updating and operation.
 
Cheers,
 
Billy Buck

Just realized something:  I've made a whole bunch of presets for the 32-bit UAD plugs.  Are those all going to be unusable for the 64-bit versions?  They are located in the UAD Program Files (x86) folder.  Can I just move them to the 64-bit program folder?