Problems After Installation

Missing libraries after Installation on Windows OSedit

Installing missing libraries for Windows N and Windows KN distributionsedit

Windows N and Windows KN versions are made for the European and Korean market and due to antitrust regulations do not include Windows Media Player which parts of are required to run TouchDesigner.

You can download and install the missing features for Windows 10 / 11 here

Problems after installation with licensing or keyingedit

Windows - License Retrieval Erroredit

In some cases starting TouchDesigner will fail with a dialog titled TouchDesigner Key Retrieval Error or License Retrieval Error. The content of the error message will look similar to this:

License Retrieval Error License Retrieval Error

This can be resolved by rebuilding the wmi repository.

Please be advised though that deleting and rebuilding the repository can cause damage to the system or to installed applications.

To perform a rebuild of the WMI repository, please do the following:

  1. Disable and stop the winmgmt service
  2. Locate C:\Windows\System32\wbem and copy the wbem to another location for a backup.
  3. Rename C:\Windows\System32\wbem\repository folder (Note: it will not let you rename the folder if winmngmt service is still running)
  4. Enable and start the winmgmt service
  5. Open Command Prompt as Administrator, run the following commands:

cd C:\Windows\System32\wbem\ for /f %s in ('dir /b *.mof') do mofcomp %s

If you continue to have problems, join the support thread here.

macOS - Permissions Error when installing or disabling a keyedit

If you get a L1 Key Error when installing your key (see image below), or if you get an error disabling your key, please follow these instructions. Please make sure you are in and Administrator account.


In your admin account, open Terminal and paste in the command:

ls -l -d "/Library/Application Support/ca.derivative"

You should get a line back like so. Note that the group owner should be admin, not wheel:

drwxrwxr-x@ 10 root admin 340 17 Jan 2017 /Library/Application Support/ca.derivative

If you are missing the directory, then enter this command in the Terminal:

sudo mkdir "/Library/Application Support/ca.derivative"

If you do not have matching permissions (1st column), then enter this command in the Terminal:

sudo chmod 775 "/Library/Application Support/ca.derivative"

If you do not have admin as a group (4th column), then enter this command in the Terminal:

sudo chgrp -R admin "/Library/Application Support/ca.derivative"

Restart TouchDesigner and try installing or disabling the key again.

Problems during Uninstalledit

Installer exits during Uninstall without erroredit

When this happen, best practice has been to restart the computer to free up any possible locks on the folder. Most commonly after a restart the remaining files will have been removed and a fresh install can be started.