Quartus Pro simulation libraries for Riviera Pro

Hello,

Using Quartus Pro 25.1, when trying to use the simulation library compiler tool to generate simulation libraries for Riviera Pro, the following error appears:

Error: # ACOM: Error: COMP96_0001: Cannot find source file "c:/altera_pro/25.1/quartus/eda/sim_lib/altera_syn_attributes.vhd".

Checking the folder content, it seems there are several missing files.

This scenario has been reproduced in several machines. 

Could you please help us to solve this?