Description of problem:
Stacktrace of exception is printed to stderr once generation of automatic installation script fails.

Version-Release number of selected component (if applicable):
EAP 6.4.0.ER3

How reproducible:
Always

Steps to Reproduce:
1. Try to generate automatic installation script to /etc/auto.xml (without having write permissions)

Actual results:

• error dialogue appears
• stacktrace is printed to stderr

Expected results:

• error dialogue appears
• stacktrace is hidden from user

Additional info:
This is a by-product of BZ1200189