I purchased Neutron Advanced and have been using it with Sonar Platinum for 3 days. I am very impressed especially with the Track Assistant feature.
 
My typical track set up uses Fab Filter Pro for EQ, iZotope Ozone Dynamics for compression, iZotope Limiter, and iZotope Insight for level reference, plus other effects, i.e. delay, reverb, etc. It usually takes me several hours to get everything tweaked (not including volume levels)
 
Yesterday, I did an experiment on a song that I had just finished up. I disabled all the Fab Filter and iZotope plug ins and inserted Neutron in each track. I then ran track assistant on each track, along with setting the limiter at my desired level in Neutron. Total time was an hour to tweak all the tracks. I'm sure I can get this time down once I work with the program and get templates set up.
 
When I compared the Neutron EQ nodes with those that were in Fab Filter Pro, I was pleasantly surprised to find that the Frequencies, Q, Gain/Boosts were very similar. I realize that Track Assistant offers starting points, and can be seasoned for personal flavor, but I think this will be a fantastic time saver for me. In addition, I’m concerned about my hearing loss and this tells me that even with my degraded hearing, I get similar results from Neutron that has much younger hearing. 
 
Walt

Just wanted to drop a quick note on this one for the community. The OP and I have PMd a few times and verified that his download is correct (Neutron Advanced only download, same MD5 hash as mine), as well as seeing a video of what he is experiencing. His Track Assistant shows the audio of the track moving but none of the EQ nodes begin moving.
 
In my case (when it failed), the audio of the track never even became visible (the splash covered the entire UI in an opaque fashion).
 
He is following up with iZotope, so wanted to let folks know that my assumption may be bunk. The OP installed from the stand-alone installer, but the issue he is seeing is significant.
 
Just wanted to put this out there in case others are experiencing similar.
 
Another note: I played with both versions of Neutron to try to replicate the OP and found the other bug I saw mentioned somewhere... The VST2 version of Neutron comes up in surround mode (even though is only stereo). After running track assistant, the master outs jumps to +9dB and stay there, even with the transport not running. The LFE channels of Neutron (VST2 version) all show as "pegged" as soon as track assistant is enabled although there is no audio streaming through them (meters not moving).
 
Quick Edit: I also just submitted a bug report to iZotope directly and linked this post for them regarding the pegged audio meters with the VST2 version (full blown Neutron, not just the stand-alone EQ module).
 
Another edit to the above: The issue with the VST2 version may very well have a SONAR component to it, as the VST2 version comes up in Adobe Audition 4.0 without surround enabled on a stereo track, although Audition is also very much surround capable. Another clarification with this.... I can only test the 32-bit VST2 version in Audition, so the issue may lie with the 64-bit VST2 version, but am unable to verify.

Got my serial from Time+Space.  Authorized it and...get this...found 2 licenses waiting for me in my iLok manager.  Whoo Hoo.
 

Way to go, olpal.

You

yorolpal
Got my serial from Time+Space.  Authorized it and...get this...found 2 licenses waiting for me in my iLok manager.  Whoo Hoo.
 

you probably got the one they sent me which came up, "belongs to another user"... 

Update:
 
After 1 week with frustration I was about to give up to get it too work. The only thing the last few days that gave me hope is that the nods where active and moving when using the "learn" function & so I knew this was some kind of internal computer issue for my case. I see this problem on Izotope Facebook page by users and also other forums.
 
I think Neutron is awesome, but for me, the track assistant feature is the top feature and just needed it to work.
 
Right now I remembered I had some kind of issues with some software from Vengeance last year. I had 1 percent hope again so needed to give it a try. I am from Norway, so we use Ø, and since my name is Øivind, my user profile, and therefore also my user folder is named Øivind. Since the file that "track assistant" uses to work on the system: instrument_classifier_params.npz , is placed in the apps data/Izotope folder under that username, it did not understand the Ø. So what I did is to create another userfolder within the english vocabulary & pasted the Neutron folder over there at the same place & the magic did happen. It works!!!
 
This was my last idea. Now I can start talk to my friends again & live a normal life  & most of all make much more music!
 
Over & out.

Way to go, ol pal! Super glad you got it sussed. Track assistant can be awesome. Let us know how it's working for you.

Way to go 2, Ølpal.

Fleer
Way to go 2, Ølpal.

I see what you did there.

It sounds like most have already resolved the issue with Track Assistant just spinning and spinning and not making its settings.  I've seen this occasionally, too, and I installed the Music Production Bundle 2 as an upgrade for Music Production Bundle (1), just letting it update everything -- basically the default installation.  What I found was that the endless spinning and not making settings with Track Assistant occurred only when I started Track Assistant with playback already going, perhaps having also dragged Neutron (VST3 version by this point) to a track while playback was going.  Whenever I stopped playback, pressed the Track Assistant button, then started playback, the endless spinning did not occur.
 
Rick