I had the same problem, i had to grab and “buy” another free thing from the marketplace to get it switching from “unavailable” to being able to create a project. Just opening the shopping cart wasn´t enough in my case.
Maybe it would be a good idea to add a check for this to the launcher? We have the option for changing the location, we have the option to search for errors, maybe add a function to quickly check (and repair) the paths or have it check, if that stuff still is, where it has to be to be useable 
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