I've been playing a Elite Dangerous over the past few days. Now today, when I start up steam, it suddenly says it is uninstalled (name in sidebar is dimmed, and play button is replaced with install button). To check, I took a look at CCleaner's uninstall tab and it said Elite Dangerous was there: 24.9 GB of space.
I was thinking maybe just to install it again, maybe it will just install specific files that somehow got lost, but I don't have 24.9 gigabytes of space left on my computer, so it won't let me.
I'd rather not have to install it all over again, as it would take around 8 hours.
I have tried restarting my computer and steam.
EDIT: I am able to launch it from running EDLaunch.exe in the Elite Dangerous folder in steamapps/common, so it is purely a steam issue. But I'd like not have to do this everytime...