So, I decided to purchase "BloodyCheckers" and "DLC Quest" last night. When I tried to play either one, I got the "Game couldn't start; please download game again" error. I did try to download each again, to no avail. I then tried to run some of my older purchased Indie Games ("Avatar Drop", "Breath of Death VII", "Action Arcade Wrestling", etc.) that have always worked fine before, and got the same error for each. HOWEVER, my downloaded Live Arcade games ("Joust", "TMNT", "MvC2", etc.) worked just fine. So, the problem appears to be confined to Indie Games, for whatever reason.
I tried to clear my cache, but no luck.
I am connected to XBox Live, having double-checked my connection.
My personal information is all up to date.
I do have an official MS 360 HDD.
^ Everything that I've considered mentioned above, I found online, but still no help. What am I missing? Any help would be greatly appreciated! Thanks a million in advance!