SIMULATION LOG ============== Design: C:\Program Files\Labcenter Electronics\Proteus 6 Professional\multplexer1.DSN Doc. no.: Revision: Author: Created: 22/05/05 Modified: 25/05/05 Compiling source files... Processing ..\..\Parallax Inc\Stamp Editor v2.1\BS2\74HC154.BS2... ASEM51 ..\..\Parallax Inc\Stamp Editor v2.1\BS2\74HC154.BS2 /INCLUDES:C:\Program Files\Labcenter Electronics\Proteus 6 Professional\TOOLS\ASEM51 ERROR: ASEM.EXE failed to run (GetLastError() is 0x0). Build FAILED with 1 error(s).