In reply to stefaniecg:
You’re looking at the pre-compiled directory, which is not human readable.
We reccomend that people keep using the UVM 1.1d release while the UVM goes through the IEEE for standardization. The only reasons to use the UVM 1.2 release is to provide feedback and to ensure you can run your code with both versions of the UVM.
This forum is not for tool specific help, but you can look here Questa/CompilingUVM | Verification Academy for more information.