Internal Error: Sub-system: FTM, File: /quartus/synth/ftm/ftm_arriav_atom_builder.cpp, Line: 484

Description

Due to a problem in the Quartus® II software version 13.1, you may see this Internal Error when compiling a design that uses LPM_MULT.

Resolution

To work around this problem, download and install patch 0.79 from the links below. You must install the Quartus II software version 13.1 before installing this patch.

    Download the version 13.1 patch 0.79 for Windows (.exe)
    Download the version 13.1 patch 0.79 for Linux (.run)
    Download the Readme for the Quartus II software version 13.1 patch 0.79 (.txt)

This problem is fixed beginning with the Quartus II software version 14.0.