Getting files out of CASUSER

[lancman]

I've been trying out the Proc CAS save.table action, following the example in
https://documentation.sas.com/?docsetId=caspg&docsetTarget=p0l65oq3xsb06en1rnfzw3wj49tq.htm&docsetVe...
I've also tried the export example

table.save / 
  table={name="iris" caslib="casuser"} 
  name="iris.xlsx";

The problem I have is that while I can see iris.xlsx in Data Sources I can't find a way to download it. I know there are other ways of creating .xlsx files and downloading but I'm curious now why I can't get files out of CASUSER. Would it be a permissions issue on the server? 

I've tried setting up a different path based caslib to a folder I can see from the Explorer. I can load a table into it but it's not letting me save anything at all, tables or files.

Using SAS Studio 5.2