After installing Photoshop Elements 2020 I get from time to time a dialog with the error message "No more virtual tiles can be allocated.". This happens always immediately after a reboot. It also pops up about once a day, always when the software is not in use. The dialog is created by the "Elements Auto Creations 2020.exe" process. There is about 400 GB of free SSD space left, andf always more than 5 GB of free RAM.
Have tried it as admin, and it didn't help. Didn't expect it could help, as the error happens right after reboot without starting the program (and then repeats at least once a day, today for a change about 5 times, without starting the program once). Most probably "C:\Program Files\Adobe\Elements 2020 Organizer\Elements Auto Creations 2020.exe", as the process ID of the error message dialog points to that executable.
I have had the exact same problem since installing 2020 on my Win 10 Pro computer. I have given Elements admin rights in the shortcut properties. However, I still get the daily error about virtual tiles from Elements Auto Creations
Try Windows 10 Compatibility Mode. From the Start menu, find Photoshop Elements program, Right click, choose Properties/Compatibility. From there, run the Compatibility Troubleshooter. If the troubleshooter suggests a compatibility mode, accept it and try the program in compatibility mode. If it helps, exit the program and choose to accept the recommended compatibility mode.
I don't know if this will work for everyone, but it worked for me.