Forum Discussion
Well, even I've run into the same issue with Active-HDL v10 . The design won't compile and even the device library compile also fails stating missing c:/intelfpga_lite/18.1/quartus/eda/sim_lib/aldec/fiftyfivenm_atoms_ncrypt.v.
I did a little digging around and found that the tool expects the files to be in the "aldec" folder which is not there. These files are created by default in the mentor folder
c:/intelfpga_lite/18.1/quartus/eda/sim_lib/mentor and the tool expects the same files in the aldec folder.
So, I created another folder named aldec under the sim_libs directory and copied all the files from the mentor folder to this one.
c:/intelfpga_lite/18.1/quartus/eda/sim_lib/aldec/
Now when I compiled the device libraries as well as the design, the compile went through.