Psychonaut421

Sorry if this is a noobish question but howcome when I when I download the version of KER for KSP 1.3 it tells me that I have downloaded an unsupported version and need to install the version for 1.3 . I downloaded the most recent version of KER from here: https://kerbal.curseforge.com/projects/kerbal-engineer-redux/files/2426222 This seems to happen with a lot of mods that show they're good for 1.3 then I get a pop up notification when I load Kerbal. Same thing happens to me with SVE. Thanks for the help and suggestions.