ok, apologies - looked at the logfile - states:
ERROR AutoPAR: PAR file is Damaged, Unable to Add Parfile:
Without a PAR file, it can't tell if the files are good and bad. In any modern version like the current beta it'll run through the retries and then toss a PARless file into the failed files list.
If they're all showing bad PARS (which should be impossible), there's something wrong with your system or security software.
When you look at the download, what do the PAR block counts show?