<div dir="ltr">In your admin panel under the links table you should have a remote thumbnail link for your layer. Try to open that link into the browser and see whether there's and error. Or try to take a look at the apache error log while regenerating the thumbnail</div><div class="gmail_extra"><br><div class="gmail_quote">2015-06-17 16:46 GMT+02:00 Miguel-Angel Manso-Callejo (UPM) <span dir="ltr"><<a href="mailto:m.manso@upm.es" target="_blank">m.manso@upm.es</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear,<br>
<br>
I have solved the problem with raster layer modifying geoserver importer core raster sld template from UserStyle to NamedStyle xml tag.<br>
<br>
I have other problem.<br>
<br>
Geonode makes thumbnail but it can not be opened with web browser or other GIS application. It may be corrupted.<br>
<br>
What can be the problem?<br>
<br>
Regards<br>
Miguel A<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature">SimoneĀ </div>
</div>