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    <p> Dear Quantum-Espresso users and developers</p>
    <p>I was trying to run NEB example and got following message:</p>
    <p><span style="color: rgb(34, 34, 34); font-family: arial,
        sans-serif; font-size: 12.8px; font-style: normal;
        font-variant-ligatures: normal; font-variant-caps: normal;
        font-weight: 400; letter-spacing: normal; orphans: 2;
        text-align: start; text-indent: 0px; text-transform: none;
        white-space: normal; widows: 2; word-spacing: 0px;
        -webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
        255); text-decoration-style: initial; text-decoration-color:
        initial; display: inline !important; float: none;"> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><wbr
        style="color: rgb(34, 34, 34); font-family: arial, sans-serif;
        font-size: 12.8px; font-style: normal; font-variant-ligatures:
        normal; font-variant-caps: normal; font-weight: 400;
        letter-spacing: normal; orphans: 2; text-align: start;
        text-indent: 0px; text-transform: none; white-space: normal;
        widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;
        background-color: rgb(255, 255, 255); text-decoration-style:
        initial; text-decoration-color: initial;"><span style="color:
        rgb(34, 34, 34); font-family: arial, sans-serif; font-size:
        12.8px; font-style: normal; font-variant-ligatures: normal;
        font-variant-caps: normal; font-weight: 400; letter-spacing:
        normal; orphans: 2; text-align: start; text-indent: 0px;
        text-transform: none; white-space: normal; widows: 2;
        word-spacing: 0px; -webkit-text-stroke-width: 0px;
        background-color: rgb(255, 255, 255); text-decoration-style:
        initial; text-decoration-color: initial; display: inline
        !important; float: none;">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span></p>
    <p><wbr style="color: rgb(34, 34, 34); font-family: arial,
        sans-serif; font-size: 12.8px; font-style: normal;
        font-variant-ligatures: normal; font-variant-caps: normal;
        font-weight: 400; letter-spacing: normal; orphans: 2;
        text-align: start; text-indent: 0px; text-transform: none;
        white-space: normal; widows: 2; word-spacing: 0px;
        -webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
        255); text-decoration-style: initial; text-decoration-color:
        initial;"><span style="color: rgb(34, 34, 34); font-family:
        arial, sans-serif; font-size: 12.8px; font-style: normal;
        font-variant-ligatures: normal; font-variant-caps: normal;
        font-weight: 400; letter-spacing: normal; orphans: 2;
        text-align: start; text-indent: 0px; text-transform: none;
        white-space: normal; widows: 2; word-spacing: 0px;
        -webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
        255); text-decoration-style: initial; text-decoration-color:
        initial; display: inline !important; float: none;">%%%%%%%%%%%%%%%%%%</span><br
        style="color: rgb(34, 34, 34); font-family: arial, sans-serif;
        font-size: 12.8px; font-style: normal; font-variant-ligatures:
        normal; font-variant-caps: normal; font-weight: 400;
        letter-spacing: normal; orphans: 2; text-align: start;
        text-indent: 0px; text-transform: none; white-space: normal;
        widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;
        background-color: rgb(255, 255, 255); text-decoration-style:
        initial; text-decoration-color: initial;">
      <span style="color: rgb(34, 34, 34); font-family: arial,
        sans-serif; font-size: 12.8px; font-style: normal;
        font-variant-ligatures: normal; font-variant-caps: normal;
        font-weight: 400; letter-spacing: normal; orphans: 2;
        text-align: start; text-indent: 0px; text-transform: none;
        white-space: normal; widows: 2; word-spacing: 0px;
        -webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
        255); text-decoration-style: initial; text-decoration-color:
        initial; display: inline !important; float: none;">     task # 
               0</span><br style="color: rgb(34, 34, 34); font-family:
        arial, sans-serif; font-size: 12.8px; font-style: normal;
        font-variant-ligatures: normal; font-variant-caps: normal;
        font-weight: 400; letter-spacing: normal; orphans: 2;
        text-align: start; text-indent: 0px; text-transform: none;
        white-space: normal; widows: 2; word-spacing: 0px;
        -webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
        255); text-decoration-style: initial; text-decoration-color:
        initial;">
      <span style="color: rgb(34, 34, 34); font-family: arial,
        sans-serif; font-size: 12.8px; font-style: normal;
        font-variant-ligatures: normal; font-variant-caps: normal;
        font-weight: 400; letter-spacing: normal; orphans: 2;
        text-align: start; text-indent: 0px; text-transform: none;
        white-space: normal; widows: 2; word-spacing: 0px;
        -webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
        255); text-decoration-style: initial; text-decoration-color:
        initial; display: inline !important; float: none;">     from
        rdiaghg : error #       452</span><br style="color: rgb(34, 34,
        34); font-family: arial, sans-serif; font-size: 12.8px;
        font-style: normal; font-variant-ligatures: normal;
        font-variant-caps: normal; font-weight: 400; letter-spacing:
        normal; orphans: 2; text-align: start; text-indent: 0px;
        text-transform: none; white-space: normal; widows: 2;
        word-spacing: 0px; -webkit-text-stroke-width: 0px;
        background-color: rgb(255, 255, 255); text-decoration-style:
        initial; text-decoration-color: initial;">
      <span style="color: rgb(34, 34, 34); font-family: arial,
        sans-serif; font-size: 12.8px; font-style: normal;
        font-variant-ligatures: normal; font-variant-caps: normal;
        font-weight: 400; letter-spacing: normal; orphans: 2;
        text-align: start; text-indent: 0px; text-transform: none;
        white-space: normal; widows: 2; word-spacing: 0px;
        -webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
        255); text-decoration-style: initial; text-decoration-color:
        initial; display: inline !important; float: none;">     S matrix
        not positive definite</span><br style="color: rgb(34, 34, 34);
        font-family: arial, sans-serif; font-size: 12.8px; font-style:
        normal; font-variant-ligatures: normal; font-variant-caps:
        normal; font-weight: 400; letter-spacing: normal; orphans: 2;
        text-align: start; text-indent: 0px; text-transform: none;
        white-space: normal; widows: 2; word-spacing: 0px;
        -webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
        255); text-decoration-style: initial; text-decoration-color:
        initial;">
      <span style="color: rgb(34, 34, 34); font-family: arial,
        sans-serif; font-size: 12.8px; font-style: normal;
        font-variant-ligatures: normal; font-variant-caps: normal;
        font-weight: 400; letter-spacing: normal; orphans: 2;
        text-align: start; text-indent: 0px; text-transform: none;
        white-space: normal; widows: 2; word-spacing: 0px;
        -webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
        255); text-decoration-style: initial; text-decoration-color:
        initial; display: inline !important; float: none;"> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><wbr
        style="color: rgb(34, 34, 34); font-family: arial, sans-serif;
        font-size: 12.8px; font-style: normal; font-variant-ligatures:
        normal; font-variant-caps: normal; font-weight: 400;
        letter-spacing: normal; orphans: 2; text-align: start;
        text-indent: 0px; text-transform: none; white-space: normal;
        widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;
        background-color: rgb(255, 255, 255); text-decoration-style:
        initial; text-decoration-color: initial;"><span style="color:
        rgb(34, 34, 34); font-family: arial, sans-serif; font-size:
        12.8px; font-style: normal; font-variant-ligatures: normal;
        font-variant-caps: normal; font-weight: 400; letter-spacing:
        normal; orphans: 2; text-align: start; text-indent: 0px;
        text-transform: none; white-space: normal; widows: 2;
        word-spacing: 0px; -webkit-text-stroke-width: 0px;
        background-color: rgb(255, 255, 255); text-decoration-style:
        initial; text-decoration-color: initial; display: inline
        !important; float: none;">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><wbr
        style="color: rgb(34, 34, 34); font-family: arial, sans-serif;
        font-size: 12.8px; font-style: normal; font-variant-ligatures:
        normal; font-variant-caps: normal; font-weight: 400;
        letter-spacing: normal; orphans: 2; text-align: start;
        text-indent: 0px; text-transform: none; white-space: normal;
        widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;
        background-color: rgb(255, 255, 255); text-decoration-style:
        initial; text-decoration-color: initial;"><span style="color:
        rgb(34, 34, 34); font-family: arial, sans-serif; font-size:
        12.8px; font-style: normal; font-variant-ligatures: normal;
        font-variant-caps: normal; font-weight: 400; letter-spacing:
        normal; orphans: 2; text-align: start; text-indent: 0px;
        text-transform: none; white-space: normal; widows: 2;
        word-spacing: 0px; -webkit-text-stroke-width: 0px;
        background-color: rgb(255, 255, 255); text-decoration-style:
        initial; text-decoration-color: initial; display: inline
        !important; float: none;">%%%%%%%%%%%%%%%%%%</span></p>
    <p><br>
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    <div id=":3sj" class="ii gt " style="font-size: 12.8px; direction:
      ltr; margin: 5px 15px 0px 0px; padding-bottom: 5px; position:
      relative; color: rgb(34, 34, 34); font-family: arial, sans-serif;
      font-style: normal; font-variant-ligatures: normal;
      font-variant-caps: normal; font-weight: 400; letter-spacing:
      normal; orphans: 2; text-align: start; text-indent: 0px;
      text-transform: none; white-space: normal; widows: 2;
      word-spacing: 0px; -webkit-text-stroke-width: 0px;
      background-color: rgb(255, 255, 255); text-decoration-style:
      initial; text-decoration-color: initial;">
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        style="overflow: hidden;">
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          <div class="m_-1528016207960754911gmail_signature"
            data-smartmail="gmail_signature">
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                  <div>Best wishes,</div>
                  <div>Maxim Arsent'ev, Ph.D. (Chemistry)</div>
                  <div>Laboratory of research of nanostructures</div>
                  <div>Institute of Silicate Chemistry of RAS<br>
                    St-Petersburg, Russia<br>
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