Hoi, I diffed a few logfiles. The difference is due to small changes in abcfit (i.e. the interface to it), e.g. < fReturnLog[ 11] = 211 IERR < 0 --- > fReturnLog[ 11] = 214 IERR < 0 [snip] < ../bin/SunOS58/anaQA -C n00 -d 4 -D /u/ec/ursl/d/root/anaQA-n00 -mc -SN -r 1234 -pk -c chains/csx-genbch-new-2000b --- > ../bin/SunOS58/anaQA -C o00 -d 4 -D /u/ec/ursl/d/root/anaQA-o00 -mc -SN -r 1234 -pk -c chains/csx-genbch-new-2000b This is obviously just a superficial explanation. Cheers, --U.