Problem Updating CIS; Bad Version Number Error

I am running CIS v8.0.0.4344 Have been running CIS with no issues for a year? However, the past few days I can not update the signature files automatically. (Not a problem with CIS being blocked) I downloaded both the 1-20-15 and 1-21-15 database update but when attempting to manually update the database I receive the following error:

“There is a bad version number in the file.”

Any ideas?

Thanks ! ! !