MrEyeball Free Event Notifier not working

I'm trying to use the free version of the Event Notifier and the .jar is by default, a winrar file.
I try changing the default program to Java, but it only opens a command prompt for a split second, I can make out the prompt to say
"Error: Could not find or load main class file"

The client runs for me. Did you extract the FreeVersion.zip to a folder? There should be an executable jar named "MRE_-_FreeVersionClient" and a lib folder with another jar. If you manage to run the client, it will probably give you another error though. From what I've heard, the free version doesn't work.

Yeah I thought he said he disabled free version for now or something