Hi Daniel,
I assume you downloaded the file from github that I wrote here some posts ago. That’s an outdated build. Because the pull request builder is working again you should download the file from the location mentioned in the opening post of this thread.
I don’t want to copy the link here to avoid that I have to update it everywhere whenever it changes. Please go to the opening post of this thread and download the current JAR using the link on
The lastest JAR can be found here
Best Regards,
Nils
P.S. 2.5.0.M4 will have the binding included, so when it will be released, there won’t be a need for manual installing of JARs any more 
PPS: Just noticed that M4 is already released! So you could also go and update to M4, if that’s an option for you.