Having read this post I thought I might need to set some permissions in the manifest (aka build.settings) file, but it seems that either there is implicit permission to write to the temporary and document directories. However, either I cannot see the appropriate option or it is set already?

http://developer.anscamobile.com/forum/2010/09/03/which-android-permissions-are-usuable-how-turn-one

My app (the web overlay sample with only a piece of code to write a file to the temporary directory) fails after installing on Android but is fine on iOS.

What am I missing?