I've encountered what might be a problem and I was curious if anyone has solved it yet. The Aldiko 2.0 app in the Amazon Appstore is restricted to Android v2.1 and above. I can't even download it, much less install it. There's another version on Android Freeware, but it won't install. I'm pretty sure it required v2.1 or above. Does anyone know where I can find a version of the current Aldiko app that will run on my older tablets? Thanks.