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Unable to execute dex: Multiple dex files define Lcom/google/gdata/util/common/base/Escaper

I'm using "core-1.47.1.jar" and "signpost-core-1.2.1.2.jar" in my project. Both the jar file has "Escaper" class with same package hierarchy, that's why I'm getting the above error, plz see the image below
I tried solution posted here but when I removes/rename package in one of conflicting jar, it flags this error "Conversion to Dalvik format failed: Unable to execute dex: method ID not in [0, 0xffff]: 65536". Please help.

Error in android running the project "Multiple dex"

Error message from console and please fix the project also
014-07-03 19:09:15 - Dex Loader] Unable to execute dex: Multiple dex files define Lorg/apache/commons/lang3/builder/ToStringStyle;
[2014-07-03 19:09:15 - RSExample] Conversion to Dalvik format failed: Unable to execute dex: Multiple dex files define Lorg/apache/commons/lang3/builder/ToStringStyle;
I did all circus like refresh,clean checking jar files.............but I found no result these code has been taken from the github.

1.find the error class
2.check out that the class is available in how many jar(definitely that )
3.if available both, remove one jar
4.run
Note : becoz of two classes are trying to execute , then the problem occur
or check the java buldpath

Mobile APP stopped working

My mobile APP was working perfectly.
I got a new computer, downloaded Eclipse + Android SDK, and got the following error messages:
[2013-12-11 13:31:45 - MyPulse] ERROR: Unable to open class file C:\Users\dridley\Dropbox\MyPulse\Martin Brown\ideaProjects\MyPulse\gen\com\palczewski\mypulse\Manifest.java: Permission denied
[2013-12-11 13:36:04 - Dex Loader] Unable to execute dex: Multiple dex files define Lorg/json/simple/ItemList;
[2013-12-11 13:36:04 - MyPulse] Conversion to Dalvik format failed: Unable to execute dex: Multiple dex files define Lorg/json/simple/ItemList;
[2013-12-11 13:47:09 - MyPulse] Dx trouble writing output: already prepared
[2013-12-11 13:47:15 - Dex Loader] Unable to execute dex: Multiple dex files define Lorg/json/simple/ItemList;
[2013-12-11 13:47:15 - MyPulse] Conversion to Dalvik format failed: Unable to execute dex: Multiple dex files define Lorg/json/simple/ItemList;
The messages repeat many times.

Your project has more than one jar with org.json.simple.ItemList. Remove the extra jars and rebuild.
Also, having the work area in a Dropbox folder likely isn't a good idea. If you need to back up or share code, use a real version control system.

Android error/warning Unable to execute dex: wrapper was not properly loaded first

I just started doing Android development today and I am getting this error message:
[2012-02-16 09:17:38 - Dex Loader] Unable to execute dex: wrapper was not properly loaded first
and not sure if it requires some action on my part, or what ta heck it means :)
What should I do about it and what does it mean?
Thanks!

Eclipse: Unable to execute dex: stackOverflowError

When trying to build my android project I get the following error. I've been able to compile without complain on other machines with (what I believe to be) the exact same setup (ubuntu 11.10/eclipse indigo/same android sdk)
Unable to execute dex: java.lang.StackOverflowError. Check the Eclipse log for stack trace.
Conversion to Dalvik format failed: Unable to execute dex: java.lang.StackOverflowError. Check the Eclipse log for stack trace.
In the eclipse log all I get is about 2 pages of :
java.lang.StackOverflowError
at com.android.dx.cf.code.Ropper$2.visitBlock(Ropper.java:1310)
at com.android.dx.cf.code.Ropper.forEachNonSubBlockDepthFirst0(Ropper.java:1647)
at com.android.dx.cf.code.Ropper.forEachNonSubBlockDepthFirst0(Ropper.java:1671)
at com.android.dx.cf.code.Ropper.forEachNonSubBlockDepthFirst0(Ropper.java:1671)
at com.android.dx.cf.code.Ropper.forEachNonSubBlockDepthFirst0(Ropper.java:1671)
...
Any suggestions would be greatly appreciated. :)
Edit:
Searching the log files I also found that I got this error right before.
Warning: A handler conflict occurred. This may disable some commands.
Conflict for 'org.eclipse.ltk.ui.refactor.apply.refactoring.script':
HandlerActivation(commandId=org.eclipse.ltk.ui.refactor.apply.refactoring.script,
handler=ActionDelegateHandlerProxy(null,org.eclipse.ltk.ui.refactoring.actions.ApplyRefactoringScriptAction),
expression=AndExpression(ActionSetExpression(org.eclipse.cdt.ui.CodingActionSet,org.eclipse.ui.internal.WorkbenchWindow#9801f4),WorkbenchWindowExpression(org.eclipse.ui.internal.WorkbenchWindow#9801f4)),sourcePriority=16640)
HandlerActivation(commandId=org.eclipse.ltk.ui.refactor.apply.refactoring.script,
handler=ActionDelegateHandlerProxy(null,org.eclipse.jdt.internal.ui.refactoring.actions.ApplyRefactoringScriptAction),
expression=AndExpression(ActionSetExpression(org.eclipse.jdt.ui.CodingActionSet,org.eclipse.ui.internal.WorkbenchWindow#9801f4),WorkbenchWindowExpression(org.eclipse.ui.internal.WorkbenchWindow#9801f4)),sourcePriority=16640)

I had got the same error and was able to solve it... Hope it helps you...
Look in the bin folder of your project directory and you will see .dex files generated.. Delete them and try to run your project again...