portableapps won't work on the pc I used to install them...

I have two computers and the one I used to install portableapps to my flash drive refuses to run portableapps. On my other computer I could just use the startportableapps program and it created the thing in the system tray. However when I try that on the original computer it won't start in the system tray...

Is this normal or is there a setting that needs to be changed?