I have a Galaxy S, and a few months ago I got Kik on it. Kik was working wonderfully, until yesterday. I didnt see it on my list of apps, so I decided to Uninstall it and install it back, well that did not go very well. When I installed it back, it said "Package file invalid", it made me frustrated because I do not yet have service. I dont understand why it just now started doing this. So, that is my problem.