Failed to re-package resources - Unity to Android

I get this error which has been referred to before, but I've isolated the issue to make it happen only when I set the default icon in Player. Seems like it can't copy the asset over. Is there a bug here? I have tried various textures and it still has the same error. If I remove the icon it builds correctly.

I'm using Unity 4.6.1 and ASDK 21 building for 2.3.3 (Gingerbread)

Error building Player: CommandInvokationFailure: Failed to re-package resources. See the Console for details. E:\ASDK2\android-sdk-windows\build-tools\17.0.0\aapt.exe package --auto-add-overlay -v -f -m -J gen -M AndroidManifest.xml -S "res" -I "E:/ASDK2/android-sdk-windows/platforms/android-17\android.jar" -F bin/resources.ap_