<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Hi,<br><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">In the release notes for 6.2 it says:<br><br>
<pre>* Some constants in the definition of PBE functionals were truncated to 
    6 significant digits. While not a bug, this could lead to tiny differences
    with respect to previous results and other XC implementations (r13592)</pre>

<br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">I would guess this explains it.<br><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Best<br><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Kevin May<br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">PhD Candidate<br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Department of Mechanical Engineering<br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">MIT<br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div></div>