Assets missing in android export.

So i'm developing a game for android on the unity indie version and i built and ran a couple of builds on my samsung galaxy s2 and they ran fine. but all of the sudden every build i do for the android form my unity is missing all of the assets except for the skybox. every texture, shader, model, and GUI is missing. let me know if you need pictures to see what i mean.

thanks for reading :)