The Eclipse plugin is tagging the DRL file in Package Explorer with an error and the Problem tab shows an error in the DRL file, location unknown. However, there is no error shown in the editor and the rules seems to run without any problem.
If I edit the DRL by adding white space the error description will change. Once it was ExceptionInInitializer, once it was just blank, once it was complaining about an unknown function and displaying text from log message, and now it is NPE. In all cases no error is displayed in the editor and the rules run without an error.
I will load a screen shot.