I have an android project where I am using the generated client libraries for google app engine. IT was working great until suddenly I am getting an error marker on the endpoint-libs folder. inside the folder there is no specific file with an error market on it, but It wont let me launch the application. I get no error in the console, and I did absolutely nothing to the code. It simply just stopped working. Does anyone know what might have caused this? I appreciate any responses because i'm clueless.