The following code is freezing the IDE in 3.1.1-2:
JIP:- create_object('org.apache.activemq.ActiveMQConnectionFactory'('java.lang.String'), ['tcp://localhost:61616'], Handle).
The ActiveMQConnectionFactory  is in the CLASSPATH and has this contructor.
There was a bug in the version 18.104.22.168 that has been solved in the current version on SVN.
You can download and compile the current version on SVN or you can wait a couple of days when we'll publish the binary of the new version.
No problems, I will wait for the new version.
Thanks for the quick reply.
Fixed in 22.214.171.124.