Cannot use user commands in Dyalog APL

I just installed Dyalog-APL 18.0 on my windows(Windows 10) machine and when I tried using ]box on -style=max on the IDE I got the following error:

FILE ACCESS ERROR: C:/Users/<User>/Documents/: Unable to read directory status

Then I noticed that there was a previous error when opening Dyalog which I had blatantly ignored:

SALT initialization failed: C:/Users/<User>/Documents/: Unable to read directory status

Furthermore, I realized that all user commands give the first error.

Some details: I installed it as an administrator privilege with Avast Antivirus installed.

Things I tried:

1. Adding the documents folder as an exception in the antivirus setting and also adding it in the allowed apps list(from Ransomware Shield). It was followed by a restart after the change.
2. Reinstalling
3. Starting Dyalog as administrator

After some experimentation, we determined that the issue was something restricted being located in the Documents folder. By default, the APL system will look there for custom user commands:

      ⎕SE.SALT.Set'cmddir'
C:\Users\<User>\Documents\\MyUCMDs;C:\g\link\SALT\spice;C:\d\SVN\salt\trunk\spice

So we asked it to permanently skip that location:

      ⎕SE.SALT.Set'cmddir -p C:\Program Files\Dyalog\Dyalog APL-64 18.0 Unicode\SALT\spice'

And that solved the problem.