Screen Capture Broken

Okay so I have a JXD S7300 that's only about half a year old, and for some reason when I try to capture screens using vol-/power, the image will end up corrupt (blank) and attempting to open it will crash the gallery app.

It wasn't happening before I tried to run the Google Experience Launcher or some of the new KitKat apps released a few months ago on it, but I uninstalled those and it's still not working as it should. I don't understand what can be causing this.

 

Okay, so I uninstalled updates on Google+ and Google Search, and it started working for a while, but then it stopped again. I'm getting com.android.media errors so I guess it has something to do with the Media service and one weird thing that happened was when I went into settings -> apps and it started tapping on a bunch of different things on its own.

I guess if worst comes to worst I'll just backup and reset, but I was kind of hoping I wouldn't have to seeing as the device isn't even a year old yet.