Can't Make an App in App Engine Studio

[TyroneClinB]

Alert level: critical.

Unable to create this application. Go back to the create app experience and enter a different scope name. Details: Failed to create templated object, details: Missing parameter

What is going on?

[Ankur Bawiskar]

@TyroneClinB 

Did you try to clear instance cache using cache.do and then logout and login again to see?

If my response helped please mark it correct and close the thread so that it benefits future readers.