It might be an error with the way other files such as images or CSS are linked to.
Would you be able to extract the iOS view and send me the project so I can check it?
@Jeremie Leroy thanks, Ill prepare a project and send a PM.
I found the problem while creating a subset of the project for @Jeremie Leroy.
The problem occurred when calling the loadFileURL method twice, once from the open event and à second time from the activate event.
Having a sandbox error and having no error in the simulator was misleading …