WDM 5.7 Image Push Failure

When trying to push a captured image from WDM 5.7, the imaging process halts during the download of the image files. After some time, the image deployment will fail with an error "sh: no job control in this shell" and it drops to the shell. The scheduled package entry in WDM 5.7 does not change to an error state and so I cannot get any error details.

I tried deploying the image with an HAgent of 6.3.5.17, WDA 2.0 and Merlin 3.3.8 with no success. Deploying the same image from USB Imaging Tool 2.1.1.2 works without an issue.