licence is corrupt or isnt functioning

we have been using this product since 2005 no issues however we came to update the program and 2 pop up boxes come up avast sbs version can be used on windows small business server only not on the ful windows version only and the 2nd box states the licence key has expired or invalid to thursday the 22nd of jan 2009 curent date 9th feb 2007 what is the issue

Does the license file contain an entry for SBS as well?

There’s a problem in the current version that causes the Server Edition to incorrectly use the SBS entry of the license file even though there’s a separate Server Edition entry.

It would be best if you could contact sales@avast.com - they’ll most likely split the license file to two parts - one for SBS and second for the rest.

Thanks
Vlk