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
I've run into the same issue whether I have 3rd party JARs or not. As sastraxi says, when this is a result of a 3rd party JAR, fixing the build path often fixes things. I often find the most effective solution, however, is to click Project -> Clean. This realigns all resources and rebuilds the project according to whatever the new SDK's rules.
Hope this helps,
FuzzicalLogic