Is the name of the app under 8 characters and has no spaces? Here are two of mine that work. Thank's i fixed the typo. ;!@Install@!UTF-8! RunProgram="StartX.exe /WAIT \"msiexec /i sav.msi /qb-! RUNLIVEUPDATE=0 REBOOT=REALLYSUPPRESS\"" ;!@InstallEnd@! ;!@Install@!UTF-8! RunProgram="StartX.exe /WAIT \"msiexec /i sav.msi /qb-! RUNLIVEUPDATE=0 REBOOT=REALLYSUPPRESS\"" ;!@InstallEnd@!