Whenever I start up Keyscape as a standalone executable, it throws up the following dialogs:

I click OK and Keyscape comes up fine, and I am able to save user presets. There does not seem to be any problem related to the above message, but I still want to make it go away.
Looking at the properties for the STEAM folder, sure enough it shows its read-only attribute is set:
However, I am unable to clear the RO attribute. It looks like it does, but when I check again it's reverted back to read-only.
I am the owner of the folder, I am an administrator, and I have full access to the folder:

But I still cannot clear the RO bit on this folder, any of its sub-folders (e.g. Keyscape) or files.
What the heck am I doing wrong? Feel free to tell me it's something dumb.
BTW, I've also tried moving the STEAM folder to another location, following
Spectrasonics' instructions, but the problem persists.
P.S. This is only happening on my laptop. I don't get these messages on my primary DAW.