When Checksum Checker is run the first two lines of the log file look like this:
Aug 22, 2013 4:44:44 PM au.gov.naa.digipres.rollingchecker.CheckerServer initLogging
FINER: Checksum statistics: 0 checksums, with NaN read millis, NaN checksum millis, NaN hex conversion millis per AIP
Checksum Checker should not be outputting statistics at this point and this line should not be present
Fixed in version 3.0.1