Solved! Go to Solution.
I also could not find this application to install on my xbox 360. As for your suggestion to contact Microsoft, I have spent upwards of six hours in the support chatrooms for xbox live and just keep getting the runaround. They are often claiming that I need "gold membership" even though that is clearly not the case, since June of 2014 when they changed their policies to make all entertainment applications available to free xbox live accounts.
So TyleenZ's suggestion for us as customers to contact Microsoft about this is not sufficient. Presumably Time Warner has an agreement in place for Microsoft to distribute this application through their application marketplace (which you may have paid them $$ for). They are NOT fulfilling their side of this agreement. Please Time Warner, you need to contact Microsoft and get them to fix it! Only you can do this. There is no way they are going to fix the problems in their application marketplace database in response to customer support requests.
In the meantime your paying customers are being cheated!
I have been searching for this app well. I called TWC, who told me the Xbox 360 app is supported and should be there. The TWC rep had no other suggestions to help me. So I then called Microsoft, who told me the app has been removed from the marketplace. The Microsoft rep told me the only way it would have been removed is if TWC removed it, because there were no breaches of terms between Microsoft and TWC.
So I called TWC back again (really having fun with this now). It turns out that TWC stopped supporting the Xbox 360 app and they have removed it from the marketplace. So yes, TWC screws it's customers yet again. Greatest company ever.
You can still get the app if you have previously downloaded it. Go to your Xbox360 account settings and look in the download history to re-install the app.