I'm having a new problem, with my old(ish) tablet. I'm using it more and more for books, mostly for school. However today it started acting up and it won't open epub or mobi files. Those are the only two I'm experiencing the problem with, but it might be more.
Basically, when I go in and click the file, the "loading" bar pops up, but then immediately closes. and that's it. I've tried restarting the tablet, I've tried turning it off and on again, I've tried clearing the cache of the different apps, I've tried uninstalling and reinstalling the apps I use for books, I've even tried installing a completely new app and the same thing keeps happening.