PS Pad Editor Tip: How to launch MESS from within PS-Pad By Flash Angstrom March 24, 2010 Since PS Pad editor's "Open active file in external program" button does NOT set the active directory when it exits, MESS just returns. You need to write a short DOS Batch file to overcome that thusly : >>> cd "C:\Program Files\MESS" mess -window astrocde -cart %1 <<< save it (as mess.bat, right in with the editor) and run it with : "C:\Program Files\PSPad editor\mess.bat" "%Dir%%Name%.bin" Can't get it to work using their "Command line" button at all, but you can paste that into "Settings | Highlighter Settings..." under "External applications" tab by Name:'g it "MESS" (no quotes there) and CTRL-V the command line (WITH all the quotes) in Application: just don't forget to "Add" it to the list. Launch MESS with 'F9' or click on the icon of a gear-in-a-window and select MESS there. Or, if you want to run MESS automatically after assembling, paste that command line in the "Compiler" tab's "Run After Compilation". But you won't see if Zmac returned any Errors in the Log window... It seems strange putting all that in with the Highlight settings - the same settings CAN be set up as Project settings, but then you would have to do that all over again for every different project.