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    <p>Hi,</p>
    <p>I just upgraded my MacBookPro to the latest M4 chip, and have
      problems while running buster (snapshot 20240710) with CCP4 9.</p>
    <p>It seems that it get stuck at crossec step at the first cycle :
      crossec keeps running (I stopped it after 15 minutes....). <br>
    </p>
    <p>Are there any known problems with M4 / Sequoia ?<br>
    </p>
    <p>thanks a lot for your help.</p>
    <p>have a nice day,<br>
    </p>
    <p>laurent<br>
    </p>
    <p>this is the command I used :</p>
    <p>refine -p ./refine_02/refine-coot-0.pdb -Gelly
      ./refine_02/occ.gelly -l ../../my.restraints.cif -m
      ./scale_01/staraniso_alldata-unique.mtz -WAT 3 -d refine_03
      -nthreads 6 > refine_03.log &</p>
    <p>here are the last lines of the logfile :</p>
    <p> ################################ BIG cycle 1
      #################################<br>
       <br>
       <br>
       ESC[1mNOTEESC[m : (controllable) refinement parameters = XYZ B
      OCC<br>
       <br>
       running BUSTER (187.01405 - 1.48565 A) in
      refine_03/01-BUSTER/Cycle-1 [extra library
      /tmp/maveyrau-BUSTER/maveyrau-1736324017-refine__22844.elib]:<br>
       <br>
       ESC[1mNOTEESC[m : created file for BABSLV by removing 165 atom(s)<br>
      <br>
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