My app was working and I did not change a single thing in the source code. Eclipse updated and now when I try to run the app it doesn\'t open and that error messages shows up wh
If you have third-party JARs in your project, then I experienced the same thing this morning. You can verify this (poor choice of words, I know) if your LogCat shows a VerifyError with no helpful information as the cause of the problem.
The solution that worked for me was to check these items in Project Properties > Java Build Path > Order and Export.

If this doesn't help, can you post the LogCat output?