I downloaded 2.4 (non pro) and when I click on application I get the following box;

InstallShield
command line parameters
/L Language Id
/S Hide Initalize dialog
for silent mode use :/s
/v/qn
/vparameters to MsiExec.exe.....

and so on and so on and I click ok and nothing happens. I click on app again and same box comes up I click ok and nothing happens...you get the idea...