I installed the S28.bin file on my 4210 sensor and had no errors in the output.log file. I went to CSPM as the readme instructs, loaded the CSPM signature update file, updated and rebooted. Then I went back in to specify an update target in Update Sensor/Signature Wizard. My two sensors show up, but under the version column it shows S27 and the sensor query comes back with "Error communicating with sensor". I can ping and telnet to the sensor. All of the sensor's services are up-to-date and running.
I went back and re-downloaded the CSPM signature .ZIP file and re-extracted it to make sure that I had the most current version.
Any thoughts or ideas would be greatly appreciated.