How to get rid of my spamming notification?
Removing DivX and DivXUpdate

If you'd like to remove the DivX app along with its DivXUpdate, you need to uninstall the software.

Uninstaller

Uninstaller you can find in /Applications/DivX folder and run Uninstall DivX for Mac.app.

Manual Removal

If above folder and uninstaller doesn't exist, just remove:

/Library/Application Support/DivX/DivXUpdate.app


To remove the associated launchd services, check first which one are registered by this Terminal command:

launchctl list | grep divx


Then disable or remove them. The following two commands will remove the jobs:

launchctl remove com.divx.update.agent
launchctl remove com.divx.dms.agent


After you may consider removing these service files from /Library/LaunchAgents (called divx).

sudo rm /Library/LaunchAgents/com.divx.update.agent.plist # For Update
sudo rm /Library/LaunchAgents/com.divx.dms.agent.plist # For DivXMediaServer


Killing notification popup

Then kill the annoying update app, type this command in Terminal:

killall DivXUpdate