I didn't have the problem with 4.2.0-EA, however with the latest 4.2.0 release the body of the email sent on a job end event no longer contains resources_used information.
Here is a current example of an email body:
PBS Job Id: 263290.rockhopper.jax.org
Job Name: STDIN
Exec host: n8/0
Here is an example from 4.2.0-EA:
PBS Job Id: 262025.rockhopper.jax.org
Job Name: align_1423_stack_grey.tif
Exec host: n9/1+n9/0
This has been fixed and will be in the 4.2.5 release.
What's the commit that fixed this?