excellent eugene. great advice.
remember that your VICIBOX INSTALLER does not need to "match" unless you have made "mods" to the system overall. if you have made not mods to the system (outside the vicidial gui and .conf files in asterisk), you are safe installing the "latest" vicibox.
But you should try to match the VICIDIAL version and build. This can be done with SVN. Alternately, of course, you can simply copy from "Functional" to "DR" (nightly?) the entire setup. Since you'll be copying the database already anyway, that's not a stretch. Remember that the IP address will likely be WRONG on the DR box (Unless you intend to actually change the IP address to the main server ip in case of death and take the main server "offline").
Choices:
use SVN to change your version to match after a standard install of the newer VICIBOX
use backup/restore (restore is manual, but you'll need it to set up a DR box anyway
) to change the version in the DR box to match the production box
update the production box to the latest version using zypper up and / or SVN. (then the new box will already match at installation!)
also: if your VICIBOX install continues to fail, even on the latest, post your motherboard specs and try GoAutoDial (which can also use a backup set as a DR for a Vicidial box, the databases are the same!)