unable to instantiate application - ClassNotFoundException

Question

EDIT: This problem has not already been resolved in the other suggested SO question

I had a fully working app on the market for over a year, with ve

Answer 1

Once I had the same error message, but maybe the cause isn't the same.

I did a code and worked for a while, then I wanted to improve it and got the same error and I couldn't run it.

I could fix the problem with

• the correct Build Path order (as I can see you've already did this)
• I check on the Order and Export tab the android-suppor-v4.jar
• and the key was the Android SDK Managert->Upgrade everything and (next) Eclipse->Help->Check for updates.

After I upgraded to the latest android plugin and SDK my app compiled and ran again.

I hope this will help you!