System Requirements

Yaoqiang BPMN Editor requires Oracle's Java Runtime Environment (JRE) version 6 or later to be installed in order to run. It is highly recommended that you install JRE 8. You can download binary installers from http://java.oracle.com.

Auto Update Requirements

1) Update Java to version 8u101 or later.

Because the sourceforge download mirrors use "Let's Encrypt" certificates details, but only Java 8u101 or later trust it.

2) Install Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files 8

The sourceforge download mirrors use strong encryption (256 bits), while the Java JDK, due to export restrictions, is distributed without strong restrictions. By the default it is failed to decrypt 256 bits of encryption..

The solution is to download jar from below link and add to {JAVA_HOME}/jre/lib/security http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html