Launcher can not find source install or projects

I’ve installed the binary version of the launcher on a new PC and copied over the VaultCache from the old one. I’ve also built the github source release version (currently 4.17.1). But the Launcher can not see the source install or any source based projects.

For example if I want to add assets to a source based project from the VaultCache in the launcher. It does not list any projects, even if I tick show all. Only binary based projects are listed.

I have run UnrealVersionSelector-Win64-Shipping.exe in source install and it says the directory was successfully registered but nothing happens the launcher still can not see.