Critical Issue
Description
VHDL designs and test benches that use VHDL std_developerskit fail to compile in ModelSim-Altera Starter Edition version 6.5e and ModelSim-Altera version 6.5e.
Resolution
Reimplement your VHDL code using standard IEEE VHDL libraries so that code does not depend on the std_developerskit library or use ModelSim-Altera Edition version 6.5b.