The Exchange AV Service is dependent on the Inoculan Anti-Virus Server Service. Change the Start-up type of the Exchange AV Service to Manual. The Exchange AV Service should always be set to "MANUAL" as Inoculan will Auto-Start the service independent of the startup property assigned to it. Stop both services, and then restart the Inoculan Anti-Virus Server Service. This should start both services with no errors.
The error could also be caused by the Inoculan service starting prior to all of the Exchange Services. Have you checked for patches from CA's web site?
The other alternative is to add a Service Startup Dependency for Inoculan to wait until the Exchange Services are started.
Hope this helps.
Regards.
Duwane