Android: não foi possível encontrar o método com.google.analytics.tracking.android.EasyTracker.getTracker

Eu tenho um aplicativo que faz uso da biblioteca do Google Analytics. Recentemente, mudei o código para um novo espaço de trabalho e o aplicativo parou de funcionar. O código cria OK, mas quando é executado, ele é interrompido com o seguinte erro.

06-12 23:11:14.117: I/dalvikvm(31080): Could not find method com.google.analytics.tracking.android.EasyTracker.getTracker, referenced from method com.apps4care.v2conf.utils.analytics.raiseEvent
06-12 23:11:14.117: W/dalvikvm(31080): VFY: unable to resolve static method 7179: Lcom/google/analytics/tracking/android/EasyTracker;.getTracker ()Lcom/google/analytics/tracking/android/Tracker;
06-12 23:11:14.117: D/dalvikvm(31080): VFY: replacing opcode 0x71 at 0x0021
06-12 23:11:14.117: I/dalvikvm(31080): Could not find method com.google.analytics.tracking.android.EasyTracker.getInstance, referenced from method com.apps4care.v2conf.utils.analytics.start
06-12 23:11:14.117: W/dalvikvm(31080): VFY: unable to resolve static method 7178: Lcom/google/analytics/tracking/android/EasyTracker;.getInstance ()Lcom/google/analytics/tracking/android/EasyTracker;
06-12 23:11:14.117: D/dalvikvm(31080): VFY: replacing opcode 0x71 at 0x0000
06-12 23:11:14.117: I/dalvikvm(31080): Could not find method com.google.analytics.tracking.android.EasyTracker.getInstance, referenced from method com.apps4care.v2conf.utils.analytics.stop
06-12 23:11:14.117: W/dalvikvm(31080): VFY: unable to resolve static method 7178: Lcom/google/analytics/tracking/android/EasyTracker;.getInstance ()Lcom/google/analytics/tracking/android/EasyTracker;

O JAR analítico está na minha pasta "libs" e posso vê-lo listado na guia "Bibliotecas" no Caminho de Construção Java em Propriedades.

Qualquer pista de como eu posso consertar isso ....

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