I suggest we remove FindBugs connector from Central. It seems it hasn't been developed for some time now. The version we have in central is:
edu.umd.cs.findbugs.plugin.eclipse_3.0.1.20150306-5afe4d1

And if you look at the project's update site, that's still the latest release there is:
http://findbugs.cs.umd.edu/eclipse/

Furthermore, it kind of broke for me now. I never tested it extensively. But I would create a project and then right-click -> Find Bugs -> Find Bugs. This would open a window showing progress as the project is searched for bugs. When I tried it now, no window appears. For a few seconds something shows up in the status bar. But I can't see the results anywhere.

Since this is Central, we could do this right away - affecting devstudio 11 / jbosstools 4.5.0. But I guess we need PM approval first.