I'm new to MPLAB and going over the examples in the latest Users Guide (downloaded last week) and had an apparent linker failure for the example given in section 4.6, using multiple source files. The files are the one supplied in MPLAB. The build results window reads: Building EXAMPLE.HEX... Compiling EXAMPLE.ASM: Command line: "C:\MPLAB\MPASMWIN.EXE /e+ /l+ /x- /w0 /c+ /p16F84 /o+ /q C:\MPLAB\EXAMPLE\EXAMPLE.ASM" Compiling EXAMPLE2.ASM: Command line: "C:\MPLAB\MPASMWIN.EXE /e+ /l+ /x- /w0 /c+ /p16F84 /o+ /q C:\MPLAB\EXAMPLE\EXAMPLE2.ASM" Linking: Command line: "C:\MPLAB\MPLINK.EXE /o EXAMPLE.HEX EXAMPLE.O EXAMPLE2.O 16F84.LKR " this is a Windows NT character-mode executable MPLAB is unable to find output file "EXAMPLE.HEX". Build failed. What happened and how do I correct it? Thanks, John-