Default Android App - Proguard related issue

Hi,
My unsigned APK works fine. The login on First screen also works.

But when I sign the APK and install it on a device, the login fails.


I have added the below lines to proguard-project.txt
-dontwarn org.simpleframework.xml.stream.**
-keep public class com.allintravel.mobileagent.activities {*;}
-keep public class com.allintravel.mobileagent.adapters {*;}
-keep public class com.allintravel.mobileagent.anim {*;}
-keep public class com.allintravel.mobileagent.connection {*;}
-keep public class com.allintravel.mobileagent.interfaces {*;}
-keep public class com.allintravel.mobileagent.models {*;}
-keep public class com.allintravel.mobileagent.taskhandler {*;}
-keep public class com.allintravel.mobileagent.util {*;}
-keep public class com.allintravel.mobileagent.views {*;}
-keep public class com.jeremyfeinstein.slidingmenu.lib {*;}
-keep public class com.jeremyfeinstein.slidingmenu.lib.app {*;}
-keep public class com.handmark.pulltorefresh.library {*;}
-keep public class com.handmark.pulltorefresh.library.extras {*;}
-keep public class com.handmark.pulltorefresh.library.internal {*;}


Below are the Errors
04-10 11:54:33.414: W/System.err(7588): java.lang.ClassNotFoundException: com.allintravel.mobileagent.models.ResponseData
04-10 11:54:33.414: W/System.err(7588): at java.lang.Class.classForName(Native Method)
04-10 11:54:33.414: W/System.err(7588): at java.lang.Class.forName(Class.java:217)
04-10 11:54:33.414: W/System.err(7588): at java.lang.Class.forName(Class.java:172)
04-10 11:54:33.414: W/System.err(7588): at com.allintravel.mobileagent.f.a.a(Unknown Source)
04-10 11:54:33.414: W/System.err(7588): at com.allintravel.mobileagent.f.a.doInBackground(Unk nown Source)
04-10 11:54:33.422: W/System.err(7588): at android.os.AsyncTask$2.call(AsyncTask.java:287)
04-10 11:54:33.422: W/System.err(7588): at java.util.concurrent.FutureTask$Sync.innerRun(Futu reTask.java:305)
04-10 11:54:33.422: W/System.err(7588): at java.util.concurrent.FutureTask.run(FutureTask.jav a:137)
04-10 11:54:33.422: W/System.err(7588): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTas k.java:230)
04-10 11:54:33.422: W/System.err(7588): at java.util.concurrent.ThreadPoolExecutor.runWorker( ThreadPoolExecutor.java:1076)
04-10 11:54:33.422: W/System.err(7588): at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:569)
04-10 11:54:33.422: W/System.err(7588): at java.lang.Thread.run(Thread.java:856)
04-10 11:54:33.422: W/System.err(7588): Caused by: java.lang.NoClassDefFoundError: com/allintravel/mobileagent/models/ResponseData
04-10 11:54:33.422: W/System.err(7588): ... 12 more
04-10 11:54:33.422: W/System.err(7588): Caused by: java.lang.ClassNotFoundException: com.allintravel.mobileagent.models.ResponseData
04-10 11:54:33.422: W/System.err(7588): at dalvik.system.BaseDexClassLoader.findClass(BaseDex ClassLoader.java:61)
04-10 11:54:33.422: W/System.err(7588): at java.lang.ClassLoader.loadClass(ClassLoader.java:5 01)
04-10 11:54:33.422: W/System.err(7588): at java.lang.ClassLoader.loadClass(ClassLoader.java:4 61)
04-10 11:54:33.422: W/System.err(7588): ... 12 more
04-10 11:54:33.430: W/System.err(7588): a.a.a.a.ew: Can not instantiate null class
04-10 11:54:33.430: W/System.err(7588): at a.a.a.a.fy.b(Unknown Source)
04-10 11:54:33.430: W/System.err(7588): at a.a.a.a.fy.a(Unknown Source)
04-10 11:54:33.430: W/System.err(7588): at a.a.a.a.eg.a(Unknown Source)
04-10 11:54:33.430: W/System.err(7588): at a.a.a.a.eg.a(Unknown Source)
04-10 11:54:33.430: W/System.err(7588): at a.a.a.a.eg.a(Unknown Source)
04-10 11:54:33.430: W/System.err(7588): at a.a.a.a.eg.a(Unknown Source)
04-10 11:54:33.430: W/System.err(7588): at a.a.a.a.eg.a(Unknown Source)
04-10 11:54:33.430: W/System.err(7588): at com.allintravel.mobileagent.f.a.a(Unknown Source)
04-10 11:54:33.430: W/System.err(7588): at com.allintravel.mobileagent.f.a.doInBackground(Unk nown Source)
04-10 11:54:33.430: W/System.err(7588): at android.os.AsyncTask$2.call(AsyncTask.java:287)
04-10 11:54:33.430: W/System.err(7588): at java.util.concurrent.FutureTask$Sync.innerRun(Futu reTask.java:305)
04-10 11:54:33.430: W/System.err(7588): at java.util.concurrent.FutureTask.run(FutureTask.jav a:137)
04-10 11:54:33.430: W/System.err(7588): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTas k.java:230)
04-10 11:54:33.430: W/System.err(7588): at java.util.concurrent.ThreadPoolExecutor.runWorker( ThreadPoolExecutor.java:1076)
04-10 11:54:33.438: W/System.err(7588): at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:569)
04-10 11:54:33.438: W/System.err(7588): at java.lang.Thread.run(Thread.java:856)



How can I resolve this issue?

Libraries used are
FlurryAnalytics_3.3.4.jar
simple-xml-2.7.1.jar
google-play-services_lib
pull-to-refresh
\jeremyfeinstein\slidingmenu


Thanks