Problem with dgcellstogrid: lack of understanting with rgdal::OGR??? about dggridr HOT 3 CLOSED

assign("dg_debug", TRUE, envir=dggridR:::dg_env)

<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://earth.google.com/kml/2.1">
<Folder>
   <name>dgout</name>
   <description>Generated by DGGRID 6.2b1</description>
   <Style id="lineStyle1">
      <LineStyle id="lineStyle2">
         <color>ffffffff</color>
         <width>4</width>
      </LineStyle>
   </Style>
<Placemark>
<name>1</name>
      <styleUrl>#lineStyle1</styleUrl>
      <LineString>

<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://earth.google.com/kml/2.1">
<Folder>
   <name>dgout</name>
   <description>Generated by DGGRID 6.2b1</description>
   <Style id="lineStyle1">
      <LineStyle id="lineStyle2">
         <color>ffffffff</color>
         <width>4</width>
      </LineStyle>
   </Style>
<Placemark>
<name>80435</name>
      <styleUrl>#lineStyle1</styleUrl>
      <LineString>
         <tessellate>1</tessellate>
         <coordinates>

** grid generation complete **
accepted 1,020 cells / 1,020 tested

[1] "Metafile: /tmp/RtmpMioJPY/dggridR-2b0b40b1d68c.meta"
[1] "Inputfile: /tmp/RtmpMioJPY/dggridR-2b0b29dd3573.indat"
[1] "Cellfile: /tmp/RtmpMioJPY/dggridR-2b0b618446ff.cell_dat.kml"
Error in ogrInfo(dsn = dsn, layer = layer, encoding = encoding, use_iconv = use_iconv,  : 
  Cannot open layer