WD Tv Live Hub didn´t show a folder

Hi, so yesterday I send to the hub the second season of Fringe, the thing is that in the Hub the folder didn´t appear, I even tried to copy from a USB and the folder didn´t show up, I renamed the folder in my computer and it worked, then I renamed to Fringe again and it finally recognized it, I want to know what happened in order to not to happen again.

Thanks, and sorry for my bad English.

Do you have settings set to “view all local content” (hard drive plus USB drives) instead of just one or the other?