Can't select video in the xoom

[Macarse]

This is the stacktrace

E/AndroidRuntime( 6863): java.lang.NullPointerException E/AndroidRuntime( 6863): at java.util.concurrent.ConcurrentHashMap.putIfAbsent(ConcurrentHashMap.java:894) E/AndroidRuntime( 6863): at ffvideolivewallpaper.frankandrobot.com.SelectVideo$VideoSettingsAdapter.getBitmapThumbOnThread(SelectVideo.java:284) E/AndroidRuntime( 6863): at ffvideolivewallpaper.frankandrobot.com.SelectVideo$VideoSettingsAdapter.access$200(SelectVideo.java:185) E/AndroidRuntime( 6863): at ffvideolivewallpaper.frankandrobot.com.SelectVideo$VideoSettingsAdapter$2.run(SelectVideo.java:318) E/AndroidRuntime( 6863): at ffvideolivewallpaper.frankandrobot.com.SelectVideo$VideoSettingsAdapter$1.run(SelectVideo.java:222) E/AndroidRuntime( 6863): at java.lang.Thread.run(Thread.java:1020)