Successful self-contained agent installation reports as failed

The self-contained agent installation that I create includes the LDAV and vulscan.exe requires a reboot of the computer after the installation. Because of this the agent installation sometimes gives an error at the end of the installation and says to look at the wscfg32.xlg file for details. Upon reboot, all services load just fine. Here are the last lines of a wscfg32.xlg file. Is there any way to prevent this error from occuring?

FAILED:  Finished
05/26/2011 11:01:09.702    4520    2860    file.cpp    123    SUCCEEDED:  Delete (c:\ENUNTCFG.MRL)
05/26/2011 11:01:09.703    4520    2860    ntstacfgDlg.cpp    2387    Vulscan wants to reboot the machine
05/26/2011 11:01:09.703    4520    2860    ntstacfgDlg.cpp    2564    gProcessExitCode set to ERROR_SUCCESS_REBOOT_REQUIRED
05/26/2011 11:01:09.703    4520    2860    ntstacfgDlg.cpp    2570    FAILED:  bCriticalError is true.  Setting exit code to ERROR_INSTALL_FAILURE
05/26/2011 11:05:21.977    4520    2596    ntstacfg.cpp    217    Application exit value is 1603
05/26/2011 11:05:21.977    4520    2596    xtrace.c    466    process log done

===================

I also sometimes receive an installation error when using the unattended configuration to receive the certificate from the core for the management gateway- for computers that are on site (http://community.landesk.com/support/docs/DOC-1888). I always receive an error when the computer is not on-site but I thought that this was the purpose of the brokerconfig.lng file. Is there a way to prevent this error message if the computer is unable to retrieve the certificate at the time of installation but is successful at copying the brokerconfig.lng file? The end of a wscfg32.xlg file when I receive a "brokerconfig.exe /r" error is below