Hi,

I don't know why this problem appeared today, when running a job using Java 6, we got the following error:
ERROR: JENKINS-18403 JDK 5 not supported to run Maven
And then Jenkins switched to Java 7 (which we don't want).

You can see the whole log here: http://jenkins.petalslink.com/view/81%20-%20Petals%20ESB%20Enterprise%204.3.x/job/4.3.x%20-%20Petals%20Components%20-%20CDK%20-%20Parent%20POM/2/console

I checked the source code, and I guess a UnsupportedClassVersionError happened.
It would maybe best to log the exception when it does to at least ease diagnostic if the problem is coming from us… but I don't think it is the case because it happens really at the beginning of the execution…

Thanks!