Using Excel 2007 (32-bit SP3), NumXL 1.59 and Bloomberg add-in enabled, when I launch X-12-ARIMA dialog, enter data, X11 options, and hit Apply. the "Apply" button does not seems do anything (i.e. all other command buttons remains disabled). In other situations, I am getting a VBA range error.
If I disabled Bloomberg add-in (using Add-in manager) and restart Excel, everything seems to work just fine.