Proguard - Can't find any super classes

Question

I'm getting this error:

Unexpected error while performing partial evaluation:
Class       = [org/apache/log4j/chainsaw/Main]
Method      = [<init>()V]
Exception   = [java.lang.IllegalArgumentException] (Can't find any super classes of [org/apache/log4j/chainsaw/LoadXMLAction] (not even immediate super class [javax/swing/AbstractAction]))
Error: Can't find any super classes of [org/apache/log4j/chainsaw/LoadXMLAction] (not even immediate super class [javax/swing/AbstractAction])

Part of my proguard configuration:

-dontwarn javax.jms.**
-dontwarn com.sun.jdmk.comm.**
-dontwarn android.support.v4.**
-dontwarn com.google.api.client.googleapis.extensions.**
-dontwarn org.apache.harmony.**
-dontwarn com.sun.**
-dontwarn org.simpleframework.**
-dontwarn com.google.android.gms.**
-dontwarn org.apache.log4j.lf5.viewer.**
-dontwarn java.beans.**
-dontwarn org.apache.log4j.**

-libraryjars 'D:\Workspace\android\libs\acra-4.5.0.jar'
-libraryjars 'D:\Workspace\android\libs\activation.jar'
-libraryjars 'D:\Workspace\android\libs\additionnal.jar'
-libraryjars 'D:\Workspace\android\libs\android-logging-log4j-1.0.3.jar'
-libraryjars 'D:\Workspace\android\libs\android-support-v4.jar'
-libraryjars 'D:\Workspace\android\libs\annotations.jar'
-libraryjars 'D:\Workspace\android\libs\google-api-client-android-1.12.0-beta.jar'
-libraryjars 'D:\Workspace\android\libs\jtar-1.1.jar'
-libraryjars 'D:\Workspace\android\libs\log4j-1.2.15.jar'
-libraryjars 'D:\Workspace\android\libs\mail.jar'
-libraryjars 'D:\Workspace\android\libs\simple-xml-2.6.9.jar'

The library for log4j is there, so what could be the problem?

UPDATE

As I have found the problem is raised during optimalization. Shrink and obfuscation is working.

Answer 1

For those who need a fast solution on using Log4J on Android, Krivers' update actually served as a hint: setting -dontoptimize in ProGuard configuration turns off optimization and thus avoids the error (although this should only be considered as a workaround).

In fact, the Android Tools Project Site had also suggested to turn off ProGuard optimization:

Dalvik performs many of its own optimizations, and some of the optimizations performed by ProGuard are incompatible with Dalvik, so to avoid hard-to-figure-out bugs (and because the net performance gain is usually small), the default configuration turns off optimization.