Description of problem:
 "Application Server successfully started." is shown by installer even if server start with ERRORs. Installer should show message like "Application Server started with errors." so user is aware that something went wrong during server start up, currently there is no evidence of any errors.

Version-Release number of selected component (if applicable):
 EAP 6.2.0.ER6

How reproducible:
 Always

Steps to Reproduce:
 1. Make some port collision so server start with errors:
 - start another standalone server with port offset 
 - jboss-eap-6.2/bin]$ ./standalone.sh -Djboss.socket.binding.port-offset=1
 2. Run gui installation 
 3. Use default values until Socket Bindings screen
 4. Select to Configure an offset for all default port bindings, select +1 offset
 5. On Server Launch screen select to start Standalone Mode
 6. Continue till Processing screen where 

Actual results:
 "Application Server successfully started."

Expected results:
 "Application Server started with errors."

Additional Info:
 I see you are already looking for "JBAS015875" which is actually "started (with errors)" EAP message.