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)