I upgraded recently to the new Eclipse version (Oxygen). I downloaded the lombok.jar from the website and installed it. This is how the eclipse.ini looks like a
Do not use old versions of java.
What happens is that lombok puts the following line in your eclipse.ini:
-javaagent: lombok.jar
And lombok.jar is in the C:\eclipse\jee-oxygen\eclipse directory
The problem is that the shortcut created by the windows installation looks like this:
Fill in the "Start at" path and it will work: