Media Apps problems after Jelly Bean update

[Gab3]

After I updated from ICS to JellyBean (11.2.A.0.31) the phone only reads songs,photos and movies from Internal Storage ,but if i open File Manager i can see my SDCard with all the files and if i go to my music folder and tap on a song the walkman starts and song is played ,but if I go back to My music(the Menu from Walkman App) I see the number of songs "0". Here are some screenshots from apps

[Sam]

Try this: Main Menu > Settings > Apps > All > Walkman > Clear Data.

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[Gab3]

i've tried this some days ago ,but nothing. Is there any chance to go back to ICS?