Probably they were deleted after MSDE installation failed. So try to install MSDE separately (before installing ADNM). Run MSDE setup with the following command-line:
setup.exe SAPWD=fsg74DM2Mdm INSTANCENAME=avast SECURITYMODE=SQL COLLATION=Latin1_General_CI_AS DISABLENETWORKPROTOCOLS=1 REBOOT=ReallySupress
SAPWD is password for 'sa' account, it should be strong password containing uppercase and lowercase letters and numbers.
If the installation fails again, before confirming the error message, try to check for the errorlog files.