Can't download purchased pack...CarTest...

Distribution UE Marketplace
, , , ,
2

From the debugger…
4.12.0-2817388+++depot+UE4-UserContent-Windows CarTest
[2016.01.09-21.29.42:986][ 0]FInstallVaultItemCommandBase: Download Error: Request Failed, AppName: CarTest410

Is there anyone who might have an idea of the solution ?