I have the Real Gels for Reality. I tried to use them and got a message that there's a file I don't have that DS needs. That's probably because I had uninstalled and moved up to the latest version of DS. 

The message said that I should reinstall Real Gels. OK, I have the installer. But, there are still Real Gels files on my computer, in the Documents folder (Macintosh user). So, do I just trash those files? That is, how do I remove or uninstall Real Gels before I reinstall Real Gels?