Comment 2 for bug 1516312

I had exactly the same issue when changing language from EN to FR and/or updating to OTA-8.
Re-installing File Manager or setting back language to EN didn't changed anything : no file/sub-folder displayed in Documents, Music, Pictures, etc.
Nonetheless, I succeeded to solved the issue:
1. start file manager
2. "click" (touch) the menu which allows to display file by list/icon (in french : Afficher par listes/icones)
->Then, any folder's content will appear. Problem solved

It's seem that when language is changed, the "display by" option is reseted to nothing, making files and folders invisible...