There are dozens of reasons this could happen, including that your using the unspupported beta Version 2.0 which hasn't seen any support or fixes forever. You're only option is to search for your specific problem or install the fully supported forked version so we have something to work with. I guarantee that if you search for your problem either here or on http://alliedmodders.net you will find the solution.
Thanks for the help... This seems to have helped... At least I am not getting the error logging any more, and I have the server id's taken care of... I had misunderstood the server ID, where I had the ID's it did not match what was in Source Bans for all the servers.
I see two things right off Sparkie.
1. It appears you are using the wrong plugin on you game server. The plugin that comes with SourceBans 1.5.3 is called "sourcebans.smx" and is included in the "game upload" folder that comes with SourceBans 1.5.3.
Here's a link to the sourcefiles for SourceBans 1.5.3 that is working as of today:
The plugins you're using are likely old beta versions and I believe they have never worked right ( sb_bans.smx, sb_admins.smx ).
[sourcecomms.smx] You must set valid `ServerID` value in sourcebans.cfg!
2. Make sure you update the sourcebans.cfg file. Yours appears to be missing the serverID for the server. The server ID in your config file must be the same as the serverID listed on your SourceBans website. You can find the serverIDs by logging into your SourceBans website and clicking the "Servers" link at the very top. The ID for each server is shown to the left of each one of the servers in the list.
I hope this helps. Take care.