emergencee
There are three versions of JDK involved in this
1 webMethods
2 JD Edwards JAR File JDK
3 Machine on which you gened the jar files
“Unsupported major.minor version 49.0” in this case is throws when a version 1.5 class file is executed on a webMethods with 1.4 JVM
The most probable cause is the machine on which you Generated the Jar files is on version higher that 1.4
Please let us know how it goes
HTH
#webMethods#Integration-Server-and-ESB#Adapters-and-E-Standards