It looks like this PPS Sieve workunit needs its maximum # of tasks upped:

http://www.primegrid.com/workunit.php?wuid=122219236

It's currently the oldest unfinished PPS Sieve WU after 36 tasks, all of which errored out one way or the other. From a cursory glance at the various tasks' stderr output, it seems that most of the errors were as follows:

pmax not specified, using default pmax = pmin + 1e9
Please specify an input file or all of kmin, kmax, and nmax

Perhaps a bug in an earlier version of ppsieve (whatever was being used back in July)? If so, then it should be easily remediable by increasing the maximum # of tasks.