How to use the silent install flags?


I’m trying to use the -s flag to install comodo silently (from an external hard drive)
There I get an error on every computer I tried.

CIS_Setup_3.10.102363.531_XP_Vista_x32.exe -s

The application shows up in the task manager for some seconds, afterwards I can read in Installer_log.txt:

Error: Problem with the default folder path . Failed to calculate the available free disk space for the specified path.
Installation can not continue.

Is there any information how to install CIS silently using these Switches (without AppActivate/Sendkeys scripts!)