I'm trying to have elotouch (control panel applet for Elo touch screens) install silently. I'm following the instructions listed on this document: http://media.elotouch.com/pdfs/manuals/xpudriver.pdf. Here is what I have in my WPI config.js: prog[pn]=['Elotouch']; desc[pn]=['Elo touchtools']; uid[pn]=['ELOTOUCH']; dflt[pn]=['yes']; cat[pn]=['System']; forc[pn]=['yes']; cmd1[pn]=['"%wpipath%\\Install\\Elo\\EloSetup.exe" /Iu /s']; The problem is, when I run it, Elosetup.exe hangs and WPI will not continue. I have to end task it before WPI will continue its routines. I tried adding a killtask after it, but that won't run either unless I end task elosetup.exe Anyone have any suggestions?