Proguard - неразрешенные ссылки на члены класса программы

Я пытаюсь запутать свое приложение для Android, но получаю следующую ошибку:

[2012-04-15 19:55:51 - TmtAndroid] Proguard returned with error code 1. See console
[2012-04-15 19:55:51 - TmtAndroid] Warning: proguard.ant.ClassPathElement: can't find referenced method 'org.apache.tools.ant.Project getProject()' in class proguard.ant.ClassPathElement
[2012-04-15 19:55:51 - TmtAndroid] Warning: proguard.ant.ClassPathElement: can't find referenced method 'boolean isReference()' in class proguard.ant.ClassPathElement
[2012-04-15 19:55:51 - TmtAndroid] Warning: proguard.ant.ClassPathElement: can't find referenced method 'java.lang.Object getCheckedRef(java.lang.Class,java.lang.String)' in class proguard.ant.ClassPathElement
[2012-04-15 19:55:51 - TmtAndroid] Warning: proguard.ant.ClassPathElement: can't find referenced method 'java.lang.String[] list()' in class proguard.ant.ClassPathElement
[2012-04-15 19:55:51 - TmtAndroid] Warning: proguard.ant.ClassPathElement: can't find referenced method 'void setLocation(java.io.File)' in class proguard.ant.ClassPathElement
[2012-04-15 19:55:51 - TmtAndroid] Warning: proguard.ant.ClassSpecificationElement: can't find referenced method 'boolean isReference()' in class proguard.ant.ClassSpecificationElement
[2012-04-15 19:55:51 - TmtAndroid] Warning: proguard.ant.ClassSpecificationElement: can't find referenced method 'java.lang.Object getCheckedRef(java.lang.Class,java.lang.String)' in class proguard.ant.ClassSpecificationElement
[2012-04-15 19:55:51 - TmtAndroid] Warning: proguard.ant.ConfigurationElement: can't find referenced method 'boolean isReference()' in class proguard.ant.ConfigurationElement
[2012-04-15 19:55:51 - TmtAndroid] Warning: proguard.ant.ConfigurationElement: can't find referenced method 'java.lang.Object getCheckedRef(java.lang.Class,java.lang.String)' in class proguard.ant.ConfigurationElement
[2012-04-15 19:55:51 - TmtAndroid] Warning: proguard.ant.ConfigurationTask: can't find referenced method 'org.apache.tools.ant.Project getProject()' in class proguard.ant.ConfigurationTask
[2012-04-15 19:55:51 - TmtAndroid] Warning: proguard.ant.FilterElement: can't find referenced method 'boolean isReference()' in class proguard.ant.FilterElement
[2012-04-15 19:55:51 - TmtAndroid] Warning: proguard.ant.FilterElement: can't find referenced method 'java.lang.Object getCheckedRef(java.lang.Class,java.lang.String)' in class proguard.ant.FilterElement
[2012-04-15 19:55:51 - TmtAndroid] Warning: proguard.ant.KeepSpecificationElement: can't find referenced method 'boolean isReference()' in class proguard.ant.KeepSpecificationElement
[2012-04-15 19:55:51 - TmtAndroid] Warning: proguard.ant.KeepSpecificationElement: can't find referenced method 'java.lang.Object getCheckedRef(java.lang.Class,java.lang.String)' in class proguard.ant.KeepSpecificationElement
[2012-04-15 19:55:51 - TmtAndroid] Warning: proguard.ant.MemberSpecificationElement: can't find referenced method 'boolean isReference()' in class proguard.ant.MemberSpecificationElement
[2012-04-15 19:55:51 - TmtAndroid] Warning: proguard.ant.MemberSpecificationElement: can't find referenced method 'java.lang.Object getCheckedRef(java.lang.Class,java.lang.String)' in class proguard.ant.MemberSpecificationElement
[2012-04-15 19:55:51 - TmtAndroid] Warning: proguard.ant.ProGuardTask: can't find referenced method 'org.apache.tools.ant.Project getProject()' in class proguard.ant.ProGuardTask
[2012-04-15 19:55:51 - TmtAndroid]       You should check if you need to specify additional program jars.
[2012-04-15 19:55:51 - TmtAndroid] Warning: there were 17 unresolved references to program class members.
[2012-04-15 19:55:51 - TmtAndroid]          Your input classes appear to be inconsistent.
[2012-04-15 19:55:51 - TmtAndroid]          You may need to recompile them and try again.
[2012-04-15 19:55:51 - TmtAndroid]          Alternatively, you may have to specify the option 
[2012-04-15 19:55:51 - TmtAndroid]          '-dontskipnonpubliclibraryclassmembers'.
[2012-04-15 19:55:51 - TmtAndroid] java.io.IOException: Please correct the above warnings first.
[2012-04-15 19:55:51 - TmtAndroid]  at proguard.Initializer.execute(Initializer.java:321)
[2012-04-15 19:55:51 - TmtAndroid]  at proguard.ProGuard.initialize(ProGuard.java:211)
[2012-04-15 19:55:51 - TmtAndroid]  at proguard.ProGuard.execute(ProGuard.java:86)
[2012-04-15 19:55:51 - TmtAndroid]  at proguard.ProGuard.main(ProGuard.java:492)

Когда я добавляю

-dontwarn proguard.ant.**

в proguard.cfg, apk экспортируется, но после установки на телефон происходит сбой, так что в данном случае это не решение...

Что мне делать, чтобы устранить эти предупреждения? Это мое первое взаимодействие с proguard...

Спасибо