Spanning Sync not working

[Bert Shure]

friends:

Spanning Sync isn't working on my mac.  here's the error from the log:

Feb 01 10:49:09 -- Google auth token received

Feb 01 10:49:09 -- *** Connection failed. Error - The certificate for this server is invalid. You might be connecting to a server that is pretending to be “secure.spanningsync.com” which could put your confidential information at risk. https://secure.spanningsync.com/osx/3/getcals

help!

--bert--