[DaveBlake]

Well done John, always nice when people solve their own bugs. But what I can't figure is what in advancedsettings.xml could cause this bevaviour. I can see what it read from the log

Code:

Contents of special://profile/advancedsettings.xml are...
<!-- Created using Easy Advanced Settings addon -->
<advancedsettings>
    <cache>
        <buffermode>1</buffermode>
        <memorysize>524288000</memorysize>
        <readfactor>60</readfactor>
    </cache>
    <videolibrary>
        <importwatchedstate>true</importwatchedstate>
    </videolibrary>
</advancedsettings>

No idea why that caused skipping, and you have the same now with it working?
 

Oh, any thoughts on the Skin Helper addon and Black Glass Nova issue that showed in my first log file.  Who do I report that too?

SHS has it's own support thread https://forum.kodi.tv/showthread.php?tid=235676, I would raise it there. It could just be it is not updated fully for Beta yet, addon updates are up to the author. Many skins use SHS, so it is not just a Black Nova issue. But I am guessing what is the cause of the many errors in your first log, it is not a fact. Something is trying to find extrafanart folder for each video, and there is failed JSON calls to GetAlbums.  The relevent part of the log for JSON call is

PHP Code:

08:56:03.380 T:18446744072341906688 DEBUG: JSONRPC: Value does not match any of the enum values in type
08:56:03.381 T:18446744072341906688 DEBUG: JSONRPC: Array element at index 6 does not match in type properties
08:56:03.383 T:18446744072341906688 DEBUG: Metadata and Artwork module --> {"error":{"code":-32602,"data":{"method":"AudioLibrary.GetAlbums","stack":{"message":"array element at index 6 does not match","name":"Item.Fields.Base","property":{"message":"Received value does not match any of the defined enum values","type":"string"},"type":"array"}},"message":"Invalid params."},"id":1,"jsonrpc":"2.0"}
08:56:03.383 T:18446744072341906688 DEBUG: Metadata and Artwork module --> {'params': {'filter': {'and': [{'operator': 'is', 'field': 'album', 'value': u'The Axiom Archive 1969-1971'}, {'operator': 'is', 'field': 'artist', 'value': u'Axiom'}]}, 'properties': ['title', 'fanart', 'thumbnail', 'genre', 'displayartist', 'artist', 'genreid', 'musicbrainzalbumartistid', 'year', 'rating', 'artistid', 'musicbrainzalbumid', 'theme', 'description', 'type', 'style', 'playcount', 'albumlabel', 'mood', 'dateadded']}, 'jsonrpc': '2.0', 'method': 'AudioLibrary.GetAlbums', 'id': 1}
08:56:03.391 T:18446744072341906688 DEBUG: CAddonSettings[script.module.metadatautils]: loading setting definitions
08:56:03.392 T:18446744072341906688 DEBUG: CAddonSettings[script.module.metadatautils]: trying to load setting definitions from old format...
08:56:03.399 T:18446744072286243040 DEBUG: Keyboard: scancode: 0x14, sym: 0x0112, unicode: 0x0000, modifier: 0x0
08:56:03.401 T:18446744072341906688 DEBUG: CAddonSettings[script.module.metadatautils]: loading setting values