Readycache randomly fails on me

I just installed ExpressCache yesterday and had it display the same pop-up a couple of times. Fortunately, I was able to exit the ExpressCache system tray and close the applicaton, wait a bit, then restart the ExpressCache application. The SSD cache seems to be still in use and functional even though the message seemed to indicate that the Ready Cache SSD was unavailable.  The System and Application event logs show no events associated with the SSD device or the ExpressCache software. If the SSD is failing or in-accessable, I would expect the ExpressCache driver to log an error event into the system event log, since it is handling the i/o to the SSD.