I have just updated my GWT Eclipse plugin and now I get the following error when I try to compile:
An internal error occurred during: "AwardTracker_N - GWT Compile". java.lang.NullPointerException
I have not made any changes to the code since the last compile before the update.
Version: Mars.2 Release (4.5.2) Build id: 20160218-0600 GWT 2.7.0
I have found this error "Description Resource Path Location Type The project 'AwardTracker_N' does not have any GWT SDKs on its build path AwardTracker_N Unknown GWT Problem".
In the project's Properties under Java Build Path (Libraries) I have "GWT SDK [GWT 2.7.0 - 2.7.0]" and "GWT SDK [GWT 2.8.1 - 2.8.1]"
In the project's Properties under GWT - General Settings I have "Use GWT" checked, selected "Use default SDK (GWT 2.7.0 - 2.7.0)"