The uninstall does not know where to find the Install.log file. At the end of your command line (SPACE), then type the location of the Install.log file. This should solve your problem. (Example) Run line= "C:\Program FIles\Test\Unwise.exe" C:\Program Files\Test\Install.log

Note: The Unwise.exe file must reside in the same location as the Install.log file.