Hi i have successfully installed omni 3 with extenstions, trillian, keyscape, only bob moog dont work, so skip that one.

Spoiler: Instructions

Instructions:

DOWNLOAD Guiseppe version and the STEAM folder in that thread at another web page.
If you dont know which i would assume it's ok to reveal the site in a PM.

Also these instructions might work with the upload here on AudioZ

DELETE everything about omnisphere VST2-3, AU, APP
~/Library/Preferences <- omnisphere.settings and net.spectrasonics.v9.plist

Save your own library and patches you made, which is in user folder. Or save everything but you need to delete everything and do a fresh install, old patches will work later.

Steps:
Move STEAM folder with Omnisphere in it only. to ~/Library/Application Support/Spectrasonics/

open terminal: sudo chmod -R 777 one space after 777. Drag STEAM folder after it has been put in the right folder above. Then run the command.

Also make sure all omnisphere folders are read and writeable, this is what the command does.

Then you install Omnisphere 3 with in my case guiseppe version, SAVE instructions and go offline
Codesign one at a time the VST3, AU, APP with one space after each command, drag and drop
sudo xattr -cr
sudo xattr -r -d com.apple.quarantine
sudo codesign --force --sign -

Now you can run the keygen and open Omnisphere APP or in DAW ( be offline ) click the offline activation code and use the challange code that is after ch=

You open the R2R.exe with in my case lastest Crossover for Mac 25.0.1 Windows 10 64 bit bottle.
You can open with other stuff but i did this,

Challangecode example:

ch=SqbxHwLEPq34DV2chkAPrUqTx%3F%259 <- USE AFTER ch= so correct code is SqbxHwLEPq34DV2chkAPrUqTx%3F%259

Then activate omnisphere with right steam folder in place and you should already have done the sudo chmod -R 777 command.

now it should be activated and working, INSTANTLY go to ( remember to be offline and save these instructions )

~/Library/Preferences and find

net.spectrasonics.V9.plist and right click lock the file, deny read and write, or just write. But you can lock it also.

Open omnisphere make sure it finds the library it should, or you did smth wrong.
Give full disk access to Omnisphere.app and used DAW's in settings / integrity

To ensure patch saving when reloading projects.

Now it should be up and running, now you can re install or move sonic extenstions, trillian library, keyscape etc.

I moved the STEAM folder to external drive opend DAW and it asked for folder, and made the link automatically, but i had patch saving issues, so i use the original folder, with no problems atm.

I had a problem with patches from trillian not saving, so i downloaded the latest patch update for trillian which is rather old but works fine now.

I think this is pretty much everything. Comment if you have issues, but read carefully and do exactly as instructed.

Regards

Johnny

 

Here's a tip for anyone who previously installed a different version of Omni 3 and then encountered problems with Bob Moog or the FX and other libraries (Keyscape/Trillian) when installing Spectrasonics Omnisphere v3.0.0d macOS - V.R rev 1.



I had the Bob Moog problem, for example.

Spoiler: spoiler

So I set out to take a closer look at where the Omni 3 installation had left its traces.



It is important and necessary to completely clean your system of Omni 3 before installing Spectrasonics Omnisphere v3.0.0d macOS - V.R rev 1.

Here are the paths you should look at.



Since I have the library on an external hard drive, I set a symbolic link in /Users/username/Library/Application Support/Spectrasonics.



This path must also be deleted.



I would remove the app with Appcleaner, as it also deletes the installation log file. I had forgotten this before.



The path is: /Users/username/Library/Preferences/Omnisphere.settings/

and /Users/username/Library/Preferences/com.spectrasonics.omnispherestandalone.plist



In addition, the following paths should be checked to ensure that it is completely uninstalled/deleted



~/Library/Caches/

Search for Omnisphere or Spectrasonics and delete them.



Then, to be on the safe side, restart the computer after everything has been deleted.



Then reinstall Omnisphere v3.0.0d macOS - V.R rev 1



I then saw that there were no more problems with the app/VST3/AU file with incomplete signatures or any other signature issues.



Now everything is running perfectly and without any problems for me.

Great... I'm happy now.

 

Last edited by a moderator: Nov 12, 2025 at 11:47 PM

Yeah exactly i forgot to mention Mac appcleaner, dl that and activate smart delete, then delete the omni.app and other omni related folders, aliases etc,
you can save the old folders, like trilian, keyscape, but only move when successful installation, also i downloaded patches for trilian rather old but it worked when saving patches from trilian.

 

Did you have to codesign the v3.0.0d VR rev 1?

 

Tried all the instructions mentioned for both VR and Guiseppe, multiple times. No luck

On Guiseppe's version the patch doesn't remain saved after 20 minutes but all the FX work fine. On VR Rev 1 the FX (Amps and Innerspace don't work), plus the oscillator waves will stay as a flat line.

Shame :/ thanks for the steps tho!

 

You need to remove all again. use Mac appcleaner with smart delete, search hidden lib for omnisphere and spectrasonics, delete, make folders read and write in hidden lib application support, but preferences should be read and writeable also first when using keygen i guiseppe version so it writes spectrasonics,9.plist, then after activation lock it. the plist file.

STEAM folder should be read and writeable as app support in hidden lib. Remove the spectrasonics folder, so all is gone, then install guiseppe while being offline and when you install it and activate it, it says it cant find library, then move STEAM folder downloaded with guisepee release
use sudo chmod -R 777 drag drop folder, codesign all new vsts and app after install with guiseppe before activation with key gen.

You probably missed removing stuff, and app support in hidden lib and folders for spectrasonics is probably not read and writeable so it cant read or write or save.

Only lock .plist file in my instructions. Try again, remove, reboot. and do the steps, also give Omnisphere.app and DAW full disk permission in settings integrity.

 

Macbook Pro M4Pro Sonoma. Ty Johnny all you described worked perfectly, i'm impressed for the job done , also R2R work of course is fabulous, so quick done ! Just 2 things :
- Quitting the Standalone lead to the spinning ball... Have to force quit. Why ?
- Just installed it too on an Intel Macbook Pro i7 with Steam on external device : sounds loading very slowly. I fought the answer because this external drive was Exfat formatted ! So... Have to format in HFS+... (orAPFS).
Ty again so much, also Keyscape folder in the Steam folder after all done works too on mine.

 

Huge shout out to Mauwurf. I followed your detailed instructions to the letter and now I have a fully workable install. I'm happy now as well.

 

M2 Max Macbook Pro, Ventura
I followed the instructions exactly (except for the keygen because VR version doesn't need it) and Omnisphere refuses to locate the STEAM file. I noticed that the file path wasn't created upon install so I had to create the ~/Library/Application Support/Spectrasonics/ folder from scratch and move the STEAM folder into it. But when I open Omnisphere and it prompts me to locate the file I give it that one and it says

"Sorry, link creation failed."
"The STEAM folder does not have write permission. Change permissions on STEAM folder, and all STEAM subfolders, to include Write access. If STEAM is on a removable drive, use System Preferences > Privacy and ensure that the host/DAW app has full access to the drive."
^(The permissions are already on Read&Write for the STEAM folder and the parent Spectrasonics folder)

What do I do? I'd already tried the Giuseppe version and had the same issue with it refusing to recognize the STEAM folder, but I completely cleared out that previous install before this one with the instructions provided here (Appcleaner, etc)

Pls help :/

 

Also, when I was making sure I'd cleared out everything beforehand, I couldn't find these files you mentioned at all:

/Users/username/Library/Preferences/Omnisphere.settings/

and /Users/username/Library/Preferences/com.spectrasonics.omnispherestandalone.plist

Would those have only existed if I'd already been using a previous version of Omnisphere?