Unity 3D with Android

Hi everyone, I have a problem with my project: is about using the Android cell phone with augmented reality.

When i select the build&run for Android in my unity, it show some error like this:

『Error building Player: ArgumentOutOfRangeException: Cannot be negative.
Parameter name: length
UnityEditor.BuildPlayerWindow:BuildPlayerAndRun()』

I cant figure out this words mean?

Can anyone help me? Thanks!!

I just uninstalled my HTC Sync Manager, that did the trick