Conversion to Dalvik format failed in my console - android

I have one problem in my project Android. My project compile, but when I run the application, I've got this message "Conversion to Dalvik format failed: Unable to execute dex: Multiple dex files define Lbiz/source_code/base64Coder/Base64Coder;"
I've tryed to clean my project too, but nothing.
Can Anyone help me?

This is normally caused because you have 2 identical libraries added to your project.
Remove one of them and the problem will be resolved.

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how to solve java.lang.NoClassDefFoundError in Android Studio?

In order to solve this error in eclipse "Conversion to Dalvik format failed:Unable to execute dex: method ID not in [0, 0xffff]: 65536". I am trying to execute the same Android project in Android Studio, but unfortunately it does not have any error in compile and build to execute. After execution, while starting the activity. It gives java.lang.NoClassDefFoundError. Where the error occurs, Please provide the way to find or solve this problem?
You should make your application multi-dex. For more imformation:
https://developer.android.com/tools/building/multidex.html
https://developer.android.com/reference/android/support/multidex/MultiDexApplication.html
Once you've done that, if you still get NoClassDefFound, you should run the dexMainClasses script for classes that must be in the main classes.dex file:
http://blog.osom.info/2014/10/multi-dex-to-rescue-from-infamous-65536.html
http://blog.osom.info/2014/10/generating-main-dex-list-file.html

Eclipse runtime Dalvik error

When i goint to run any program this dialog box is display:
and in Eclipse these errors display in console:
[2013-02-25 19:05:09 - Dex Loader] Unable to execute dex: Target out of range: +0000ffd1
[2013-02-25 19:05:09 - Conversion to Dalvik format failed: Unable to execute dex: Target out of range: +0000ffd1
If I remove Android dependencies from project the error disappears but I need a more permanent solution. Any ideas?
I think its kind of a bug, try removing your dependencies (I am referring to added libraries, not the standard-dependencies).
Then clean and rebuild all your projects. Thereafter you should be able to add the removed libraries without errors.

Dalvik format failed with error 1 on ServerAssistant

I Found this Error "Conversion to Dalvik format failed with error 1" While I Compile ServerAssistant On Eclipse
This is the download link to my modifications project
"http://www.4shared.com/file/fXNDNs5A/ServerAssistant.html"
I have tried cleaning the project and looking at all the other solution to the problem on this website. Has someone also found some obscure solution to this error?
this error you got because the library which you have added in the project it was conflict with another class or library, may be the another library or class which was already added into the project. check the complete error and library which you have added into the project

Unable to execute dex: wrapper was not properly loaded first

I can't run my project. I've download the project from here. When i'm going to run this project. It raises this error : -
[2011-11-02 06:22:04 - Dex Loader] Unable to execute dex: wrapper was not properly loaded first
[2011-11-02 06:22:04 - jberkel-sms-backup-plus-9a8489a] Conversion to Dalvik format failed: Unable to execute dex: wrapper was not properly loaded first
I just referred some links from google for this error. They told that clean the project using project > clean Am also tried this method. But, the same error will raise from here after. What can i do for this? Any help appreciated.
I'm also having this same problem once a time. Just Restart your Eclipse and run the project again. It'll clear. Hope this will help you.

Android webservice ERROR “Conversion to Dalvik format failed with error 1” [duplicate]

This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
Conversion to Dalvik format failed with error 1 Solution?
I have looked for solutions for this but i still get this same error when I clean the project or delete and import it back or restarting the eclipse. Even i have tried "Conversion to Dalvik format failed with error 1" on external JAR this.
Here is what i did at the first place. I have created and android project and tried to put my webservice in it. (wsdl) I have generated the java classes from the wsdl and it gave me some ridiculous errors. I have fixed those errors by simply adding JDK library to the project because I wasnt there.(there were some jars and android(x.y)) Now Im having "Conversion to Dalvik format failed with error 1" error and cant fix it.
Any help would be nice. thanks in advance
Right-click your project, and go to Properties-->Build Path. Make sure that you have the JARs necessary for the API target specified in your manifest. Delete anything extraneous.
Next, in the main Eclipse menu, click on Project-->Clean, and select your project from the list.
Let me know how that goes--should help.

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