Answer

Java(JRE) Support

1. Windows

32 bit Oracle Java is recommended. If a 64 bit Java(JRE) is used, PathWAI Editor for Messages service may not start. To set the JavaHome:

modify kxymsged.control file under $CANDLEHOME$\msgedit\bin

For example: JavaHome=C:\Program Files (x86)\Java\jre7

Tested Java versions are:

Java 7 update 51(jre-7u51-windows-i586.exe)

Java 6 update 45(jre-6u45-windows-i586.exe)

2. Unix
32 bit IBM Java is recommended. If a 64 bit Java(JRE) is used, PathWAI Editor for Messages service may not start. To set the Java home

modify $CANDLEHOME$/unix/MsgEdit/bin/kxyruns.sh
For example: JAVA_HOME=/usr/java

Tested Java versions are:

AIX:
java version "1.7.0"
Java(TM) SE Runtime Environment (build pap3270_27sr2fp10-20141218_02(SR2 FP10))
IBM J9 VM (build 2.7, JRE 1.7.0 AIX ppc-32 20141215_227395 (JIT enabled, AOT enabled)

Notes:
1) $CANDLEHOME$ is directory where PathWAI Editor for Messages is installed.
2) Technically, other Java versions will work but they have not been officially tested. Please open PMR if you have any issue.

WebSphere MQ support
Supported versions are:

IBM MQ 9.0.1
IBM MQ 9.0
WebSphere MQ Version 8.0 (*)
WebSphere MQ Version 7.5.x
WebSphere MQ Version 7.1
WebSphere MQ Version 7.0.1
WebSphere MQ Version 7.0
WebSphere MQ Version 6.0

Notes:
(*)Java 1.7 or above is must with WebSphere MQ 8.0.

OS Support

Windows, AIX, HPUX, Solaris are supported. Linux is not supported.
Supported Windows Versions:
Windows 2016
Windows 2012
Windows 2008
Windows 2003

Technically, other Windows versions or UNIX versions will work but they have not been officially tested. Please open PMR if you have any issue.