Maybe you do not have a compatible TTS engine installed in the main Android settings (not the iGo settings).
What I posted works with Google, Ivona, and all variations of Nuance. Probably will not work with the old Loquendo for Android.
Try this one:
[Only registered and activated users can see links. ]
After looking at your English file that works, the TTS Engine is shown as "Android TTS"..which is compatible with some TTS engine/iGo combinations.
The more 'universal' setting is "Android", so I changed the file to "Android TTS" to describe the engine within the file. See if it now works...it's the same as your English voice file.