need a quick reminder before updating.........

i have crossdj v2.4.0 already installed and i'm about to install v2.5.0, in the past i had a problem with two shortcuts after i'd updated, one for each version so basically all i need to know is do i need to uninstall v2.4.0 first or just go ahead and install anyway as i can't remember from last time and don't want to mess up any settings of an otherwise working crossdj.