Hi, Need help on this message .

Whenever i use Quick selection tool and try to change brush picker size, always got the message ( invalid numeric entry. An intergal between -180 ิ and 180 ิ is required . Restored last valid value )
and it when allow me to close it or change it untill i have to force the photoshop cs3 to shut down .

I run this photoshop cs3 on my laptop. But in my office it has no problem at all on the desktop . How can i fix this problem ?

Any help would be appreciated

Peter