I have an EPiServer site that is currently in version 7.14. This site was originally created using EPiServer Deployment Center with version 7.5.394.2, and has since been updated several times through NuGet packages. The site is visible in the Quick Links sectioin when I start Deployment Center. When I select "All Actions -> EPiServer Community -> Version 7.5.394.2 -> Install Community on existing site", there are not sites listed in the "Install Community on Existing Site" window, but when I check the "Show All Sites" box, I am able to select my site. The installation then fails with the following eror message ("Error - This version of EPiServer Community can only be installed on a CMS 7.5 site"):
How can I get community installed on my site?