Good morning. It worked. Thank you very much. 
Clean install of Windows and Mediaportal. Not finding any IPTV channels on scan, DVBS and DVBT scans fine. Full Logs attached.there's a lot going on there:
numerous exceptions and errors in the mediaportal.log and also no MPIPTVSource.log.
I suggest a reinstall and if that doesn't work a complete uninstall and a fresh install afterwards.
Also try to minimize the installed plugins and number of log-files
Now its like finding a needle in a haystack...
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