Deployment Assembly: The currently displayed page contains invalid values

Question

I imported a Java Web application from Sourceforge, and I did three working weeks efforts to get rid off all red crosses attached to the project name and packages, but now I cou

Answer 1

I suffered the same problem, and I realized it started just after I installed into my Neon.1a Eclipse a certain old plugin, aimed to versions 3.x.

So I uninstalled that plugin, and the problem dissapeared without changing my workspace in any.

(Just to complete the information, I'll say that the "culprit" was the Randalco EHP plugin, but I suppose any old version plugin might be suspicious too).