Help!! problem with my gnex or rom

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http://forum.xda-developers.com – Okay i have a question, im running the liquid smooth rom beta 1 for the maguro. And ive taken so many pictures and have so many songs on my phone. yesterday i went to my gallery to choose a wallpaper and they are all GONE, and so is ALL my music. Now i have Astro file manager and all my pictures and wallpapers, music etc.. are still there, i dont understand this, ive tried rebooting.. nothing.. i need to know whats going on, i dont understand. p.s (sorry if this is in the wrong thread) (HowTos)