New projects created from Visual Studio templates contain default tile, splash screen, and store logo images that just contain an X in a box. These are designed to be so ugly that you feel utterly compelled to replace them.
Unfortunately, some developers forget to do this. Until recently, these weren’t actually checked by the Store certification process, thus we see some apps in the Windows Store that still contain the default Store logo:
The particular challenge with the Store logo (that’s referenced on the manifest editor’s Packaging tab and not the Application UI tab) is that you never see that graphic in the running app. It appears only in the Store after you’re onboarded the app, which is why we see some of them make it into the Store.
Fortunately, the Store certification process (and a version of the Windows App Certification Kit from November 2012 or later), will fail you if you’re still using the default images.
Save yourself the trouble, then, by making sure to double-check your square tile, wide tile, splash screen, and store logo graphics before uploading to the Store.
While you’re at it, be sure to give your app a more interesting background color than the default gray. Such things are so simple to change and make a huge difference in your Store presence.