<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">Hi all<DIV><BR class="khtml-block-placeholder"></DIV><DIV>The short of the long is that phenix.xtriage on a C2 data set shows twinning with 3 twinning operators (-h,-k-l -k-h-l and k,h,-l). Pushing it through twin_utils, the soution k,h,-l gives an r/rfree of 0.30 and 0.3014 when the twin fraction is 0.352 .</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>The question is where to go from here? I try to phenix.refine the same model in phenix.xtriage (except the mtz file is from the latest round of refinement of that model) and the R/Rfree on macro cycle =2 is 30 and 34 . Unfortunately, it doesn't seem to finish the refinement, I get a seg fault. In the def file for the refinement I set twinning = True and twin_law = k,h,-l . </DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>I tried to subject the same model and the .ref file to an autobuild passing in a .eff file for refinement specifying the twin_law, and again I get a segfault / crash when refining the input model. </DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Please advise!</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV><DIV> <SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">---------------------------------------------</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Francis Reyes M.Sc.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">215 UCB</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">University of Colorado at Boulder</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">gpg --keyserver pgp.mit.edu --recv-keys 67BA8D5D</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">8AE2 F2F4 90F7 9640 28BC 686F 78FD 6669 67BA 8D5D</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><BR class="khtml-block-placeholder"></DIV><BR class="Apple-interchange-newline"></SPAN> </DIV><BR></DIV></BODY></HTML>