I assume the SSR is triac or SCR based. Most are zero voltage switching and require holding current. What kind of flourscent lights did you have? If they had electronic ballast without power factor correction did the circuit work? Magnetic ballast may not have sufficient holding current.
I had a similar problem where some of the garage lights were going to be blocked by the opened door. I solved it by placing the ligths so that they were aove the horizontal windows in the door when it was in the open position - much of the light made it to the room down below in that position.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.