WEBGRAB 5.1 PROBLEMS ON WINDOWS 10 HOME EDITION

When I run the grabber I am getting a black screen for a split second.

no text file

no log file

can someone trace my mistake in this configuration please:

<?xml version="1.0"?>
<settings>

<!-- for detailed info about the settings see http://webgrabplus.com/documentation/configuration/webgrabconfigxml
and http://webgrabplus.com/sites/default/files/downloads/Misc/Documented_Con... -->

<filename>guide.xml</filename>
<mode>m n</mode>
<postprocess grab="y" run="n">rex</postprocess>
<user-agent>Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36 Edg/79.0.309.71</user-agent>
<!-- for siteini's that need a decrypt_userkey-->
<decryptkey site="site-name">decrypt_userkey</decryptkey>
<!-- add the correct license id values in the next line -->
<license wg-username="NESFIN" registered-email="nesfin@yahoo.com" password="XXXXXXXXXXXXXX">f</license> SHOULD I ENTER MY LOGIN PASSWORD TO WEBGRAB OR THE LICENCE NUMBER AS PASSWORD

<logging>on</logging>
<retry time-out="5">4</retry>
<timespan>0</timespan>
<update>f</update>

<!--
Replace the next dummy channel entry with the channels you want.
You can look into the installed siteini.pack folder on your computer

For the latest version,
see http://webgrabplus.com/epg-channels for the available sites/channels
or https://github.com/SilentButeo2/webgrabplus-siteinipack/tree/master/site... -->

<channel update="i" site="guidatv.sky.it" site_id="DTH_9115" xmltv_id="Sky Uno HD 108">Sky Uno HD 108</channel>

</settings>

TYIA