It's not the University Edition, it's a trial version of SAS Studio Viya. The files have been uploaded from my computer to the server.
I found what the issue is.
In older versions of SAS Studio that I have experience with, you simply uploaded file to the server and referred to them using the path expressed in the Explorer. With the new version of SAS Studio, there's an additional step after uploading, you have to create a file reference. Then instead of providing the path for the datafile argument of proc import, you provide the file reference name. The file references are made by right clicking on the file in the Explorer and selecting "Create file reference". So assuming I named my file reference "VEHICLES", the correct code is.
proc import DATAFILE="VEHICLES"
OUT=Vehicles
DBMS=csv
replace;
RUN;
Where previously it would have been:
proc import DATAFILE="/Users/nic.woyak@limolink.com/DSP/Vehicles2.csv"
OUT=Vehicles
DBMS=csv
replace;
RUN;
The documentation that helped with this:
http://support.sas.com/kb/63/855.html