On one machine, I had the same issue. I shut everything down, rebooted, reinstalled using assistant and demo mode went away. Do be careful what you uninstall.

However, my life seems to be in demo mode now. I think I have a glitch, a glitch, a glitch.....

scook
I found the files in a Downloads folder under my User name C:\Users\Steve Cook\Downloads
 
BTW, if you have a previous version of SONAR installed, all you need is the Cakewalk.exe. The Instrument.exe is the same as the Artist Instrument Collection already installed with SONAR (assuming a full SONAR install).

Yes, I found them there as well but I am not sure if you download on another PC with a faster internet link that the Assistant will find them in that location. I uninstalled and it's out of demo mode. I guess they will perfect that in the coming weeks like they did for CCC. 

Jon Sasor [Cakewalk]
...You must be logged into BandLab Assistant to install Cakewalk and have it authorize correctly...

 
It's the "authorize correctly" part that I seem to be stuck on. What exactly is the next step to authorize?

There is no activation step a user can or has to perform. It is handled by BandLab Assistant as it runs the Cakewalk installer.

scook
There is no activation step a user can or has to perform. It is handled by BandLab Assistant as it runs the Cakewalk installer.

 
OK. Thanks.

I also tried temporarily disabling McAfee antivirus and firewall before launching CWFB. No difference.

Jon Sasor [Cakewalk]
...If you run into demo mode for some reason, uninstall/reinstall from there...

 
I clicked on the "Uninstall" option in BA. Nothing happened. CWFB is still installed. Even clicking on "Open" in BA doesn't do anything either. Is this meant to launch CWFB? I'm getting the impression that the problem here is with BA rather than CWFB.

That may be too late. The activation would have already happened or failed before you could launch CbB. You would need to disable the AV and firewall before installing with BA (if those programs were interfering with activation).

Things were weird for me.  I kept getting a JavaScript error when I ran BandLab-Assistant.  Although the error was there, the files were still downloaded, so I installed them (at least the Sonar-install. For some reason the Instrument-install advertised itself as corrupted).  As this thread explains, when Sonar Launches, it is in Demo-Mode.  I tried many things and do-overs.  Sometimes BandLab-Assistant just failed with no error, disappearing altogether.  After this install, BandLab-Assistant would not open Sonar.
 
By the way I updated my Sonar-Platinum install using Cakewalk-Command-Center and that install went without a hitch and that version of Sonar did not run in Demo-Mode.  This was a breakthrough for me because previously last year (2017) I could not get Sonar to install any version beyond 21.4.00.30.  Today this newer version worked without problem.
 
I looked at the JavaScript error and it seemed to be complaining about not finding Windows-PowerShell.  I dug around and added the PATH to the PowerShell.exe to my Environment-Variables.  This fixed the strange errors in BandLab-Assistant.  After the new download and install everything was A-OK.
 
What is the difference between these two versions (the BandLab-Assistant & Cakewalk-Command-Center Versions)?
 
[Toshiba X775, Windows 7 HP]