WS has stopped unfortunately

Bug at runtime
WS has stopped unfortunately
and logcat log that could not find  
developing Android application using Eclipse and ADT plugin , when try to call asp.net web service from android application and log cat log that Could not find class 'org.ksoap.serialization.SoapObject'
The solution that work with me and I took from stackoverflow


I managed to solve the problem by

Creating a folder "libs" in the project
Copying the external jars in to the folder
Refresh the folder
Go to properties -> Build path -> Add Jar (not external JAR)
Clean the project
Restart Eclipse
Boom it worked for me. Hope it'll help others too.