I initially updated the download assistant and attempted to install CbB but it sat at installing. I then uninstalled both the download assistant and CbB reinstalled without a hitch. However, I stupidly also downloaded The Melodyne option which overwrote my paid for Melodyne Editor. The solution was simple uninstall the Melodyne 4 player and reinstall the Editor. All’s well.

Bitdefender AV was my initial problem on the original version of CbB - it was blocking BA silently.
After adding BA to my firewall rules the new version of BA (3.08) updated and installed CbB 24.04.1 bld 28 fine. 
 

I had a seamless install on my laptop and "bedroom studio" PC.
 
However, on my studio PC I did have issues with BandLab Assistant refusing to upgrade. Clicking the install upgrade button when the notification pops up did either nothing, or on occasions the "Check for Updates" menu item would change to "Checking..." and stay there forever.
 
In the end I downloaded v3.08 and installed it manually, from then on Cakewalk and the addons installed without issue.
 
One thing that still isn't working is the disable/enable on startup. Regardless of what this is set to, it always launches on startup. In the end, I used CCleaner to manually disable it on my studio PCs but left it launching on startup on my laptop.
 
I'm pretty sure this is a permissions issue with Windows 10. The issue doesn't present itself on Windows 7 (although to be fair, I've got UAC disabled on my Windows 7 boot).
 
I think it would be worth adding status/progress indicators on BL Assistant ASAP - if nothing else, it might help the Cakewalk team narrow these issues down. All these posts saying, "It doesn't work" really doesn't offer much help to them to start investigating... but unfortunately without any status and/or progress indicator, there's nothing much more us users can offer!
 
M.

I have successfully installed it 2 times. First time was very slow, talking hours and leaving it overnight. Second time it went much faster ... say 10-15 minutes to download around half a Gigabyte, and then around 10 minutes to decompress and install the program. The program in itself worked fine both times. Theme Editor looked great also, you really can customize everything to your liking.

Updated the BandLab Assistant then updated CbB.  No problems although no progress bar.  I ran CbB after the update and appears to be OK. 
 
I'm on 100 Mb (downlink) Spectrum Cable Internet link.
 

I finally got it installed on all 3 of my systems, but had no fun on my 3rd try, which happened to be the main DAW system.
 
I will chalk it up to the large install flushing out a structural problem or something with my C: drive, because after the install failed into Demo Mode about 4 times, I stopped trying and ran a bunch of disk maintenance and cleanup stuff, deleted a REG key on the suggestion of baker Noel, and it went in okay.
 
A rough takeoff, but we are flying again, and I am really digging my return to Cakewalklandia (yes, return, after a 15-year hiatus). It's fascinating to see how the program grew in the years while I was away.

On first run, it appeared to be hung. I suspect it may have just been slow, but lack of a progress bar made it impossible to tell. So I cancelled it, manually downloaded BA 3.0.8 and ran it again. After about 10 minutes of a static "downloading..." message, I peeked into the download folder and saw that the files had already been downloaded. Their file sizes weren't changing, so the download was either complete or had been abandoned, despite BA still saying "downloading...".
 
I was about to kick off cakewalk.exe manually when it suddenly sprang to life and installed Cakewalk. I started up CbB and verified that it was the correct version (24.4.1.28, A.K.A. "24.04.1 Build 28 (2018.04)" as reported in the About Box). 
 
So in the end it was a painless and successful update, total elapsed time ~ ten minutes. The installer just needs a progress bar, I think.
 
 
 
 

The first runs of BandLab Assistant and CbB both downloaded and installed without issue. I've also successfully installed the recent updates as well. I do have a reasonably fast DSL (Blast+) via Comast. 

reevant
I initially updated the download assistant and attempted to install CbB but it sat at installing. I then uninstalled both the download assistant and CbB reinstalled without a hitch. However, I stupidly also downloaded The Melodyne option which overwrote my paid for Melodyne Editor. The solution was simple uninstall the Melodyne 4 player and reinstall the Editor. All’s well.

Hi we were told by Celemony that installing the Melodyne Studio trial will not overwrite your existing install of Editor but it will just update the code. Your existing license should be intact. If this is not the case for you please provide more detail and let us know ASAP.

No problems here. I didn't even have to re-register Melodyne or AD2. The only difference was that my themes folder was placed in another location within CbB. This may help, I did not uninstall SPLAT, I just left it on my hard drive and downloaded CbB then installed it. It took about ten minutes tops.