Error Launching First Test Application: Android Packaging Problem?

Conversion to Dalvik format failed: Unable to execute dex: wrapper was not properly loaded first [project] Android Packaging Problem I've never worked with Java or ecli

Solution 1:

Go to Project -> Clean

It will rebuilt workspace and fix the errors if any.

Solution 2:

As I said, I had the same problem so I tried all the different versions and then I stopped filling in the SDK-version number and finally it did not complain anymore about the wrapper. After that it was totally fine to write the SDK-version when I created new projects.

Hope it works out for you too.

Solution 3:

Had the same problem (running on Windows 7). I resolved it by running Eclipse with Administrator privileges.

Solution 4:

try to run eclipse under administrator permission. Problem may be resolve.

I think you installed the SDK in "Program Files" folder . So for do something inside, must have administrator permission.

Solution 5:

One thing that may help is to create a new test Android project.

1. In Eclipse, select File → New → Android Project.

2. Set the project name to "Test3", check Android 2.3 for the build target, type "com.example.android.apps.test3" for the package name, and type "Test3Activity" in the "Create Activity:" text box. The form should look like:

   

3. Click Finish.

4. Expand the entry for "Test3" in the Package Explorer. Navigate to res/values/strings.xml. Double click on the entry for strings.xml:

   

5. Set the text content of the string element having name "app_name" to "Test3":

   

6. Right click on "Test3" in the Package Explorer and select Run As → Android Application. The emulator should open and after a long while, you should see:

   

If these steps do not work, then you probably have an error in your installation.

Try it out and let me know.