OK, I ran the program and here is the result:
[19:01:55 PM] --- File(s) Scan Finished [0.56s] ---
[19:04:19 PM] No Protection detected -> E:\SetUp [23E631ED]
It looks to me that the cd is not protected and yet, I'm not able to copy that file. If, suppose the file is corrupted, then how is it possible to install the encyclopedia at all?