When you are working with IDE, you might sometime get the following error:
'Running Android Lint' has encountered a problem.
Go to Menu : Window -> Preferences -> Android -> Lint Error Checking and Un-Check : "When saving files, check for errors"
There is an issue with existing Android ADT Plugin, but you don't need to worry as Google has already provided a fix for this Issue in its next release. You can get it from here
To apply the above fix, you need to follow this steps:
invoke Help > Check For Updates. Make sure you that you are using the https, not the http URL to the update center: https://dl.google.com/android/eclipse/
Now just restart Eclipse IDE, you will never ever see any Lint Error pop-up messages.