After I installed e(fx)clipse on my Eclipse 2018-09, I only get an error at the startup:
An error has occurred. See the log file."
You can see the log file at: pastebin.com/zXffdy2v
I don't know what went wrong, it seemed it installed correctly. I'm using this installer for Java JDK: jdk-11.0.1_windows-x64_bin.
This is because you are using Java 11 which does not provide javax.xml.bind anymore.
Some of the plug-ins you need haven't been fixed to deal with this.
Using Java 10 should be OK.