Updateing virus definitions

For about a month I'm having the issue with updateing virus def's.
Mostly I get 'Base file is missing', '...serious trouble..' or other cryptic messages. I've googled around, and I see I'm not alone and I can't find any usable technique to fix it. I've setup up remote administration and mirroring for my 6 computers but strangely this does not fix the issue on all computers. I've trie to manualy copy files between comps but can't touch them. Any advice. THX, milan

 

I'd try uninstalling and reinstalling EAV. It sounds like the engine file got corrupt or is missing for some reason. Just to make sure, do you have program component updates disabled in the Mirror setup providing that a license key has been entered and the mirror feature activated?