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We experienced this error when adding our new services to an existing class that was fully functional. We also verified that we received the same error on a second system. We added our code to the second system from scratch to ensure we wouldn't copy over some unseen coding error. This issue continued to persist through many hours of debugging.

In the end we attempted to recreate this issue on a fresh install of Ubuntu and ros kinetic. Fortunately for us the fresh environment resolved the issue. Same code, fresh install, no issues. We have since done a fresh install on all our dev systems and are up and running with our additional services. Now that we have cleaned our dev systems this issue can no longer be recreated.