Could not launch HDUpdater because the file is empty..... message after I got an update message about Raw Update available. Photoshop Elements 2021
Do you use a windows machine or a macOS?
Could you try the below steps and see if it resolves the problem:
In case if the EXE fails to launch in Step 3 above, Please uninstall the product and install using the installer available here, it will install the latest available updates automatically and your application will be up to date.
Photoshop Elements is not a part of the Creative Cloud. In case if Photoshop Elements is not listed as part of the installed list of products in control panel, that could mean that the installation was not complete last time and it was in a corrupt state.
I would recommend you to follow the below steps:
1. Reinstall Photoshop Elements using installer: https://helpx.adobe.com/download-install/kb/photoshop-elements-downloads.html
2. Reinstalling will install the corrupted components again. Now please check if you can see Photoshop Elements in Control panel and uninstall from there.
3. Uninstall Creative Cloud also.
4. Now agin use the same installer from Step 1 above to install Photoshop Elements, this should solve the problem.